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【单选题】
承受预紧力F0和工作拉力F的紧螺栓连接,螺栓的总拉力F2为A.
B.
（F1为残余预紧力）
C.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Years ago, I lived in a building in a town. There was another building across form mine, and it was only a few meters away. There lived a woman whom I had never met. I could see her sit by the window ...
A.
we should judge ourselves before we judge others
B.
we should judge others through the dirty windows
C.
we shouldn’t clean the windows often
【单选题】Jf4A4336一般交流电压表和电流表的表盘刻度都是前密后疏,这是由于使指针偏转的力矩与所测量的电压或电流的()成比例的缘故。
A.
平均值
B.
有效值
C.
平方值
D.
瞬时值。
【简答题】根据中文提示，选择相应的英文句子，将序号写在题前括号里。 1. 你什么时候看电视？ [ ] A. When do you watch TV? B. When do you read books? 2. 我经常早上3点回家。 [ ] A. I usually go home at 3:00 inthe morning. B. I usually go home at 3:00 in ...
【单选题】(Jf ) 一般交流电压表和电流表的表盘刻度都是前密后疏, 这是由于使指针偏转的力矩与所测量的电压或电流的( )成比例的缘故。
A.
平均值;
B.
有效值;
C.
平方值;
D.
瞬时值。
【单选题】听力原文： People in Poland take their pleasure seriously. They like to have an aim even when spending the time which is entirely their own. During the summer, people start work very early in the morning, ...
A.
They often go for walks at a leisurely pace.
B.
They usually have a specific purpose in mind.
C.
They like the seaside more than the countryside.
D.
They seldom plan their leisure activities in advance.
【简答题】用所给动词的适当形式填空。 1. Each of us _______ (have ) a nice new bag. 2. _______ (can) he dance when he was five? 3. There _______ (be) some birds and a big apple in the tree. 4. Listen, who _______ (sing) an E...
【简答题】Years ago, I lived in a building in a town. There was another building across from mine, and it was only a few metres away. There lived a woman whom I had never met. I could see her sit by the window ...
【单选题】标准版1*3瀑布流产品公司指导报价是多少?
A.
建议报价10万/台，年更新费1万/台/年，首年免更新费
B.
建议报价10万/台，年更新费2万/台/年，首年免更新费
C.
建议报价8万/台，年更新费1万/台/年，首年免更新费
D.
建议报价8万/台，年更新费2万/台/年，首年免更新费
【简答题】听下面对话，回答问题。 1. Who likes playing computer s? A. Jack's brother. B. Jack. C. Nobody. 2. When can the man do some shopping? A. On Tuesday afternoon. B. On Thursday afternoon. C. On Wednesday afterno...
相关题目：
【单选题】(Jf ) 一般交流电压表和电流表的表盘刻度都是前密后疏, 这是由于使指针偏转的力矩与所测量的电压或电流的( )成比例的缘故。
A.
平均值;
B.
有效值;
C.
平方值;
D.
瞬时值。