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【多选题】
飞机从起飞到平稳飞行时,依次要经过哪几层大气。( )A.
对流层
B.
平流层
C.
中间层
D.
暖层
E.
外层
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反馈参考答案：
举一反三
【单选题】The existence of liquid water is a necessity for a life—support environment．
A.
Right
B.
Wrong
C.
Not mention
【单选题】Earth is a rocky planet where there is liquid water, which is necessary for life to ________. [ ]
A.
come
B.
exist
C.
stand
D.
happen
【单选题】岩浆岩的分类根据SiO 2 含量，可以分为①超基性岩、②基性岩、③中性岩、④酸性岩。玄武岩、花岗岩、橄榄岩分别属于______
A.
①②③
B.
②③④
C.
②④③
D.
②④①
【简答题】The salt concentration in the liquid water of Lake Vida__________.
【单选题】The weight of the liquid displaced by a vessel floating in sea water is equal to the ().
A.
Weight required to sink the vessel
B.
Total weight of the vessel
C.
Displaced volume
D.
Reserve buoyancy
【简答题】Below is adapted from a dictionary. Water ▲Noun 1(a)[U] liquid without color, smell or taste that falls as ran, in lakes, rivets and seas, and is used for drinking, washing, etc: Water is changed into...
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