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阅读材料，回答问题。 长江中游的支流南北对称，一般年份影响我国的与北方南下的冷空气之间形成的锋面雨带，5月份位于南岭一带，使长江南岸各支流进入汛期；6月份，锋面雨带向北移到长江中下游一带，北岸支流和干流才开始进入汛期。这种支流的南北分布和雨带自推移的规律，使南岸支流与北岸支流涨水时间错开，加之沿长江地带有洞庭湖、鄱阳湖等众多的湖泊对洪水起着调节作用，干流不致在短时间内出现过大洪峰。但在1998年夏季，锋面雨带在长江流域活动时间过长，并且，长江流域普遍出现暴雨，南北支流普遍涨水，与上游的洪水同时汇入长江，使干流水量大增，引发了特大洪水。 小题1:一般年份，对长江干流水量起天然调节作用的两个因素是：①________；②________。 小题2:1998年夏季，给长江流域带来暴雨洪涝的天气系统是__________，导致这次洪水发生的自然原因是____________________。 小题3:长江三峡工程将在______、发电、航运、______、旅游、养殖等方面发挥巨大的效益。
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举一反三
【单选题】Which of the following is wrong about receptive knowledge of a word?
A.
It involves knowing the word signals a particular meaning.
B.
It involves being able to recognize the word when it is met in reading.
C.
It involves being able to use it to make yourself understood in communication.
D.
It involves being able to recognize the word when it is heard.
查看完整题目与答案
【判断题】大地水准面所包围的地球体,称为地球椭球体。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Read the sentence pairs. Choose which word or phrase best fits each blank. 1 torpedo / fusee A The workers placed a (1)________________________ on the track to warn the engineer to stop. B If visibili...
查看完整题目与答案
【判断题】大地水准面所包围的地球形体称为地球椭圆体。
A.
正确
B.
错误
查看完整题目与答案
【简答题】读我国东部沿海某地等高线图（单位：米），回答各题。 小题1:关于图中所反映信息表述正确的是（  ） A．图中河流的流向为从东北流向西南后再向南 B．①地位于山地的迎风坡，降水比②地多 C．陡崖的相对高度为大于400米，小于600米 D．甲丙两地一年四季都能看到海上日出 小题2:为发展旅游业，该地区打算修一条直达山顶（840m处）的观光索道，合适的选线是（  ） A．从甲处到山顶 B．从乙处到山顶 ...
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【单选题】all ship which,in accordance with the present convention ,are required to carry radio installation shall carry____
A.
Q-code word
B.
telephone numbers and addresses
C.
the international code of signals
D.
radio instructions
查看完整题目与答案
【判断题】大地水准面所包围的地球形体,称为地球椭球体。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following statements is wrong?
A.
A byte is a word consisting of 8 bits.
B.
Provided that the noise amplitude is not too large, the logic values represented by a digital signal can still be determined after noise is added.
C.
In negative logic binary system, the higher amplitude represents 1 and the lower-amplitude represents 0
D.
Analog signals take a continuum of amplitude values.
查看完整题目与答案
【单选题】AlI ships which,in accordance with the present Convention, are required to carry radio in stallation shall carry( )
A.
Q-code word
B.
telephone mimbers and addresses
C.
the International Code of Signals
D.
radio instructions
查看完整题目与答案
【单选题】Which of the following is undertaken by a feature analysis system?
A.
Adds extra features that were not part of the initial requirements
B.
Provides identification by evaluating facial characteristics of a person
C.
Compares a person's word phonemes with a language model database
D.
Eliminates background noises and converts digital speech signals into syllables
查看完整题目与答案
相关题目：
【单选题】Which of the following is wrong about receptive knowledge of a word?
A.
It involves knowing the word signals a particular meaning.
B.
It involves being able to recognize the word when it is met in reading.
C.
It involves being able to use it to make yourself understood in communication.
D.
It involves being able to recognize the word when it is heard.
查看完整题目与答案
【判断题】大地水准面所包围的地球体,称为地球椭球体。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Read the sentence pairs. Choose which word or phrase best fits each blank. 1 torpedo / fusee A The workers placed a (1)________________________ on the track to warn the engineer to stop. B If visibili...
查看完整题目与答案
【判断题】大地水准面所包围的地球形体称为地球椭圆体。
A.
正确
B.
错误
查看完整题目与答案
【简答题】读我国东部沿海某地等高线图（单位：米），回答各题。 小题1:关于图中所反映信息表述正确的是（  ） A．图中河流的流向为从东北流向西南后再向南 B．①地位于山地的迎风坡，降水比②地多 C．陡崖的相对高度为大于400米，小于600米 D．甲丙两地一年四季都能看到海上日出 小题2:为发展旅游业，该地区打算修一条直达山顶（840m处）的观光索道，合适的选线是（  ） A．从甲处到山顶 B．从乙处到山顶 ...
查看完整题目与答案
【单选题】all ship which,in accordance with the present convention ,are required to carry radio installation shall carry____
A.
Q-code word
B.
telephone numbers and addresses
C.
the international code of signals
D.
radio instructions
查看完整题目与答案
【判断题】大地水准面所包围的地球形体,称为地球椭球体。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following statements is wrong?
A.
A byte is a word consisting of 8 bits.
B.
Provided that the noise amplitude is not too large, the logic values represented by a digital signal can still be determined after noise is added.
C.
In negative logic binary system, the higher amplitude represents 1 and the lower-amplitude represents 0
D.
Analog signals take a continuum of amplitude values.
查看完整题目与答案
【单选题】AlI ships which,in accordance with the present Convention, are required to carry radio in stallation shall carry( )
A.
Q-code word
B.
telephone mimbers and addresses
C.
the International Code of Signals
D.
radio instructions
查看完整题目与答案
【单选题】Which of the following is undertaken by a feature analysis system?
A.
Adds extra features that were not part of the initial requirements
B.
Provides identification by evaluating facial characteristics of a person
C.
Compares a person's word phonemes with a language model database
D.
Eliminates background noises and converts digital speech signals into syllables
查看完整题目与答案
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