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【单选题】
当截面上同时作用有剪应力和正应力时________。A.
剪应力降低了混凝土的抗拉强度，但提高了其抗拉强度
B.
剪应力提高了混凝土的抗拉强度和抗压强度
C.
不太高的压应力可提高混凝土的抗剪强度
D.
不太高的拉应力可提高混凝土的抗剪强度
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举一反三
【简答题】距离丈量是用 误差来衡量其精度的,该误差是用分子为 的分数形式来表示。
【单选题】—Do you have T-shirts in green ? —________. We have many green T-shirts. [ ]
A.
Yes, we don't.
B.
Yes, we do.
C.
No, we do.
D.
No, we don't.
【单选题】I recently wrote an autobiography in which I recalled many old memories. One of them was from my school days, when our ninth grade teacher, Miss Raber, would pick out words from Reader's Digest to tes...
A.
one of the many old memories
B.
using simple words to express profound ideas
C.
Reader's Digest and school speeches
D.
how to make effective speeches
【单选题】Green type is relevant to
A.
The Aggressive Style
B.
The Passive-Aggressive Style
C.
The Submissive Style
D.
The Manipulative Style
【简答题】that cannot be revoked , recalled , or undone ; unalterable i________
【单选题】Seeing the picture _____ on the wall, I recalled the exciting days.
A.
hang
B.
hanging
C.
to hang
D.
hung
【单选题】Which of the following is NOT a type of phytoplankton?
A.
Green algae.
B.
Diatoms.
C.
Blue-green algae.
D.
Amoeba.
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