【填空题】
46.无坝取水渠首一般由___,___和___三部分构成。
查看试卷,进入试卷练习
微信扫一扫,开始刷题

答案
进水闸|冲沙闸|导流堤
解析
暂无解析
相关试题
【单选题】
The word "wag" (Line 1, Para.1) most probably means _________.
A. move
B. shake
C. bite
D. play
【单选题】
The video cameras were used to catch the dogs' responses because ___________.
A. the dogs were put in the wooden boxes
and tested one at a time
B. it was easier to catch the dogs’s response changes in the tail wagging
C. they enabled the dogs’owners to know
about their dogs’; habit
D. the dogs wagged their tails in different
directions when they were in different
moods
【单选题】
When there are no stimuli, a dog will ___________.___
A. wag to the right
B. no wag at all
C. wag to the left
D. wag to the left and then wag to the right
【单选题】
The purpose of doing the experiment is _________.___
A. to train dogs for their owners
B. to help dogs find companion
C. to help people choose their pet dogs
D. to help people judge the mood of dogs
【单选题】
The underlined word "they" in the last sentence refers to __________.___
A. the trainers
B. the systems
C. the researchers
D. the dogs
【单选题】
The new law passed in Rome will ________.___
A. help improve fishing environment
B. stop people from catching goldfish
C. guarantee better conditions for goldfish
D. discourage keeping goldfish at home
【单选题】
People in Rome believe that the civilization of a city can be judged by _________.___
A. awareness of animal protection
B. exchanges with other cities
C. protection of ancient ruins
D. recognition of animal lovers
【单选题】
The underlined word "compassion" in Para 2 is the closest in meaning to __________.___
A. support
B. pity
C. help
D. love
【单选题】
People may break the law in Turin if they ________.___
A. keep their dogs or cats in cars
B. shut their dogs home all day long
C. raise their cats near ancient ruins
D. feed homeless animals in car parks
【单选题】
We can infer from the passage that _________.___
A. the owners can leave their dogs in hot cars
B. the cat only lives in modern life
C. the new law can prevent cruelty to animals
D. the new law gives recognition to the
people who feed homeless cat
【单选题】
If a person finds getting up early a problem, most probably ________.___
A. he is a lazy person
B. he refuses to follow his own energy cycle
C. he is not sure when his energy is low
D. he is at his peak in the afternoon or evening
【单选题】
Which of the following may lead to family quarrels according to the passage?___
A. Unawareness of energy cycles.
B. Familiar monologues.
C. A change in a family member's energy cycle.
D. Attempts to control the energy cycle of other family members.
【单选题】
If one wants to work efficiently at his low point in the morning, he should __________.___
A. change his energy cycle
B. overcome his laziness
C. get up earlier than usual
D. go to bed earlier
【单选题】
You are advised to rise with a yawn and stretch because it will __________.___
A. help to keep your energy for the day's work
B. help you to control your temper early in the day
C. enable you to concentrate on your routine work
D. keep your energy cycle under control all day
【单选题】
Which of the following statements is NOT true?___
A. Getting off to work with a minimum effort helps save one's energy.
B. Dr. Kletman explains why people reach their peaks at different hours of day.
C. Habit helps a person adapt to his own energy cycle.
D. Children have energy cycles, too.
【单选题】
An effective way to prevent the burnout of young athletes is __________.___
A. to increase their sense of success
B. to make sports less competitive
C. to reduce their mental stress
D. to make sports more challenging
【单选题】
According to the passage sport is positive for young people in that __________.___
A. it can help them learn more about society
B. it enables them to find flaws in themselves
C. it teaches them how to set realistic goals for themselves
D. it can provide them with valuable experiences
【单选题】
Many coaches and parents are in the habit of criticizing young athletes __________.___
A. without realizing criticism may destroy their self-confidence
B. in order to make them remember life's lessons
C. believing that criticism is beneficial for their early development
D. so as to put more pressure on them
【单选题】
According to the passage parents and coaches should __________.___
A. help children to win every game
B. pay more attention to letting children enjoy sports
C. train children to cope with stress
D. enable children to understand the positive aspect of sports
【单选题】
The author's purpose in writing the passage is _________.___
A. to persuade young children not to worry about criticism
B. to stress the importance of positive reinforcement to children
C. to discuss the skill of combining criticism with encouragement
D. to teach young athletes how to avoid burnout
【单选题】
As pointed out at the beginning of the passage, people used to think that air pollution _______.___
A. cause widespread damage in the countryside
B. affected the entire eastern half of the United States
C. had damaged effect on health
D. existed merely in urban and industries areas
【单选题】
As to the greenhouse effect, the author ________.___
A. share the same view with the scientist
B. is uncertain of its occurrence
C. rejects it as being ungrounded
D. thinks that it will destroy the world soon
【单选题】
The underlined word "offset" in the second paragraph could be replaced by _________.___
A. slip into
B. make up for
C. set up
D. catch up with
【单选题】
It can be concluded that ____________.___
A. raising the world's temperature only a few degrees would not do much harm to life on earth
B. lowering the world's temperature merely a few degrees would lead major farming areas to disaster
C. almost no temperature variations have occurred over the past decade
D. the world's temperature will remain constant in the years to come
【单选题】
This passage is primarily about __________.___
A. the greenhouse effect
B. the burning of fossil fuels
C. the potential effect of air pollution
D. the likelihood of a new ice age
【单选题】
What is the major function of paragraph 1?___
A. To arouse the reader's concern.
B. To introduce the theme of the whole passage.
C. To summarize the whole passage.
D. To state the primary uses of TV.
【单选题】
Television, as a source of entertainment, is ________.___
A. not very convenient
B. very expensive
C. quite dangerous
D. relatively cheap
推荐试题
【单选题】
Linux 系统/etc 目录从功能上看相当于 Windows 的哪个目录?___
A. program files
B. Windows
C. system volume information
D. TEMP
【单选题】
Red Flag Linux 指定域名服务器位置的文件是___。
A. etc/hosts
B. etc/networks
C. etc/rosolv.conf
D. /.profile
【单选题】
Solaris 操作系统下,下面哪个命令可以修改/n2kuser/.profile 文件的属性为所有用户可读、科协、可执行?___
A. chmod 744 /n2kuser/.profile
B. chmod 755 /n2kuser/.profile
C. chmod 766 /n2kuser/.profile
D. chmod 777 /n2kuser/.profile
【单选题】
如何配置,使得用户从服务器 A 访问服务器 B 而无需输入密码?___
A. 利用 NIS 同步用户的用户名和密码
B. 在两台服务器上创建并配置/.rhost 文件
C. 在两台服务器上创建并配置$HOME/.netrc 文件
D. 在两台服务器上创建并配置/etc/hosts.equiv 文件
【单选题】
Solaris 系统使用什么命令查看已有补丁列表?___
A. uname –an
B. showrev
C. oslevel –r
D. swlist –l product ‘PH??’
【单选题】
Unix 系统中存放每个用户信息的文件是___。
A. /sys/passwd
B. /sys/password
C. /etc/password
D. /etc/passwd
【单选题】
Unix 系统中如何禁止按 Control-Alt-Delete 关闭计算机?___
A. 把系统中“/sys/inittab”文件中的对应一行注释掉
B. 把系统中“/sysconf/inittab”文件中的对应一行注释掉
C. 把系统中“/sysnet/inittab”文件中的对应一行注释掉
D. 把系统中“/sysconf/init”文件中的对应一行注释掉
【单选题】
Windows 2000 系统中哪个文件可以查看端口与服务的对应?___
A. c:\winnt\system\drivers\etc\services
B. c:\winnt\system32\services
C. c:\winnt\system32\config\services
D. c:\winnt\system32\drivers\etc\services
【单选题】
Windows NT/2000 SAM 存放在___。
A. WINNT
B. WINNT/SYSTEM32
C. WINNT/SYSTEM
D. WINNT/SYSTEM32/config
【单选题】
Windows NT 的安全标识(SID)串是由当前时间、计算机名称和另外一个计算机变量共同产生的,这个变量是什么?___
A. 击键速度
B. 用户网络地址
C. 处理当前用户模式线程所花费 CPU 的时间
D. PING 的响应时间
【单选题】
Windows NT 和 Windows 2000 系统能设置为在几次无效登录后锁定账号,可以防止:___。
A. 木马
B. 暴力破解
C. IP 欺骗
D. 缓冲区溢出攻击
【单选题】
当你感觉到你的 Win2003 运行速度明显减慢,当打开任务管理器后发现 CPU 使用率达到了 100%,你认为你最有可能受到了___攻击。
A. 缓冲区溢出攻击
B. 木马攻击
C. 暗门攻击
D. DOS 攻击
【单选题】
与另一台机器建立 IPC$会话连接的命令是___。
A. net user \\192.168.0.1\IPC$
B. net use \\192.168.0.1\IPC$ user:Administrator / passwd:aaa
C. net user \192.168.0.1IPC$
D. net use \\192.168.0.1\IPC$
【单选题】
在 NT 中,如果 config.pol 已经禁止了对注册表的访问,那么黑客能够绕过这个限制吗?怎样实现?___
A. 不可以
B. 可以通过时间服务来启动注册表编辑器
C. 可以通过在本地计算机删除 config.pol 文件
D. 可以通过 poledit 命令
【单选题】
在 NT 中,怎样使用注册表编辑器来严格限制对注册表的访问?___
A. HKEY_CURRENT_CONFIG,连接网络注册、登录密码、插入用户 ID
B. HKEY_CURRENT_MACHINE,浏览用户的轮廓目录,选择 NTUser.dat
C. HKEY_USERS,浏览用户的轮廓目录,选择 NTUser.dat
D. HKEY_USERS,连接网络注册,登录密码,插入用户 ID
【单选题】
在Solaris 8下,对于/etc/shadow文件中的一行内容如下“root:3vd4NTwk5UnLC:9038::::::”以下说法正确的是:___。
A. 这里的 3vd4NTwk5UnLC 是可逆的加密后的密码
B. 这里的 9038 是指从 1970 年 1 月 1 日到现在的天数
C. 这里的 9038 是指从 1980 年 1 月 1 日到现在的天数
D. 这里的 9038 是指从 1980 年 1 月 1 日到最后一次修改密码的天数
E. -以上都不正确
【单选题】
root:3vd4NTwk5UnLC:0:1:Super-User:/:”,以下说法正确的是:___。
A. 是/etc/passwd 文件格式
B. 是/etc/shadow 文件格式
C. 既不是/etc/passwd 也不是/etc/shadow 文件格式
D. 这个 root 用户没有 SHELL,不可登录
E. 这个用户不可登录,并不是因为没有 SHELL
【单选题】
在 Solaris 系统中,终端会话的失败登录尝试记录在下列哪个文件里面?___
A. -/etc/default/login
B. /etc/nologin
C. /etc/shadow
D. var/adm/loginlog
【单选题】
在 Windows 2000 中,以下哪个进程不是基本的系统进程:___
A. smss. exe
B. csrss. Exe
C. winlogon. exe
D. -conime.exe