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【单选题】
同一土壤,疏松状态下比紧实时的:A.
比重小
B.
C.
几乎不发生改变
D.
A+B
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】空间飞行时,飞行器的头部是承受最高温度和最大热流的部位,其表面温度最高可达5000°C,解决此“热障”的方法有()。
A.
辐射防热
B.
烧蚀防热
C.
吸收防热
D.
温控涂层
【单选题】I can’t finish this job by Friday. You expect too much of me.
A.
too much
B.
much too
C.
so much
D.
very much
【单选题】There is ________ work to do and the work is ________ difficult. [ ]
A.
too much, much too
B.
too much, too much
C.
much too, too much
D.
much too, much too
【单选题】Eta Carinae is hard to observe because
A.
it is too far away.
B.
there is too much dust and gas around it.
C.
the binoculars are not powerful enough.
D.
it does not send out infrared light.
【单选题】Li Lei can't go to visit the Palace Museum because he has _______ things to do. [ ]
A.
too many
B.
much too
C.
too much
D.
many too
【单选题】He eats ________ food, so he is ________ fat.
A.
much too, too much
B.
much too, too many
C.
too much, much too
D.
too much, many too
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