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【单选题】
取水口一般应设在河流冲刷岸，同时避开湍流和容易造成淤积的部位；在不影响航运的前提下，取水口尽量靠近主航道；取水口的水质与断面平均水质的相对偏差不得大于（）。A.
25%
B.
15%
C.
20%
D.
10%
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【简答题】Fall In fall, the weather 3 . The days get shorter, and the nights get longer. Trees get less sunlight, so they make less food. The leaves stop the green color. Other colors that were under the...
【单选题】The floods did not start to____until two days after the rain had stopped.
A.
retire
B.
recede
C.
retreat
D.
sink
【简答题】试述农村包围城市革命道路理论的基本内容和意义。
【简答题】A giant electronic display is(__)(__) the days to the start of the Pan-American s here.
【简答题】A giant electronic display is counting_____ the days to the start of the Pan-American s here.
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