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【简答题】
根据句意及所给提示，补全单词或用单词、固定短语、固定搭配的正确形式填空。 1. I w_____ if you can finish the work on time. 2. People in Korea are supposed ______ (bow) when they meet for the first time. 3. In the old days, the workers were made ______ (work) eleven hours a day. 4. I can't find ______ (适当的) words to describe her beauty. 5. I have ______ (借) his book for two weeks. I have to return it now.
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】螺栓联接的结构设计中,被联接件与螺母和螺栓头接触处需要加工,是为了 。
A.
不致损伤螺栓头和螺母
B.
增大接触面积，不易松脱
C.
防止产生附加偏心载荷
D.
便于装配