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【单选题】
英吉利海峡沟通了( )和大西洋。
A.
北海
B.
黑海
C.
红海
D.
南海
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举一反三
【单选题】在并联管路问题中( )
A.
流经所有管路的流量相同
B.
并联的任意管路水头损失相同
C.
当总流量已知时,可直接解得各管流量
D.
流经每一管路的水头损失相加得总水头损失
【单选题】-Could you tell me _________ the radio? -No problem. [     ]
A.
how did I mend
B.
how he mended
C.
what did he mend
D.
what he mended
【判断题】国际委员会、国际联合会、各国红会和联合国的政府代表均应参加定期举行的红十字与红新月国际大会。
A.
正确
B.
错误
【单选题】可使酚酞变红色的是( )
A.
盐酸
B.
硫酸钠
C.
氢氧化钠
【单选题】What problem did they have to resolve?
A.
New engineers had to be employed.
B.
The legal process was difficult.
C.
Some staff had to be re-trained.
【单选题】在并联管路问题中( )
A.
流径每一段管路的水头损失相加得总水头损失
B.
流径所有管路的流量相同
C.
流径每一段管路的水头损失相同
D.
当总流量已知时,可直接解得各管的流量
【单选题】设函数 有连续的二阶导数,且 , , ,则极限 等于( )
A.
1
B.
0
C.
2
D.
-1
【判断题】盐酸标准滴定溶液可使酚酞变红。 ( )
A.
正确
B.
错误
【判断题】国际委员会、国际联合会、各国红会和联合国的政府代表均应参加定期举行的红十字与红新月国际大会。()
A.
正确
B.
错误
【单选题】What problem did the Intergovernment Panel on Climate Change meet when they studied the earth atmosphere?
A.
They found the cloud's reaction to the carbon level of the atmophere was too complex to predict.
B.
They were puzzled by the carbon levels in the atmosphere's cloud.
C.
The atmosphere's reaction to the carbon level's raise is more diffcult to predit than they ever thought.
D.
Too many uncertainties in the atmosphere's carbon level are to be reduced.
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