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【单选题】
关于重力式挡土墙说法错误的是( )。A.
一般采用明挖基础
B.
在松软地层或坡积层地段时，基坑宜全段贯通
C.
砌体砂浆强度 70% 以上时，方可回填墙背填料
D.
较大的片石，在砌体下面，宽面，片以砂浆隔开
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举一反三
【简答题】润滑脂的主要物理性能指标是 _______________ 和 _______________ ;动压润滑轴承润滑油最重要的性能指标为 ____________________ 。
【单选题】-What！Ten minutes ago you told me there were no rooms. You just gave one to that man! -You ________ to understand, sir. That man has a reservation. [ ]
A.
didn't seem
B.
don't seem
C.
haven't seemed
D.
hadn't seemed
【单选题】2 What are the two general levels of usage for language? A. Polite and impolite language. B. Textbook and conversational language. C. Formal and informal language. D. Spoken and written language.
A.
B.
C.
D.
D
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