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【单选题】

强震动监测墩出露部分尺寸长、 宽、 高,宜为( ),顶面要求平整,墩体宜预留出导线穿入孔。

A.
40cm X 40cm X 30cm
B.
50cm X 50cm X 30cm
C.
40cm X 40cm X 20cm
D.
50cm X 50cm X 20cm
题目标签:震动强震动预留
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【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s surface, a visitor might assume that the canyon had been caused by some ancient convulsion...

A.
it was caused by some ancient convulsion
B.
its presence is an embarrassment to the state of Colorado
C.
it looks like an injury on the Earth’s surface
D.
it has caused many visitors to injure themselves