皮皮学，免费搜题
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【单选题】
正常人的肌肉约占体重的?A.
30-35%
B.
35-40%
C.
40-45%
D.
45-50%
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举一反三
【简答题】The student were all entertained in a Mexican restaurant, at Professor Brian's ________ A: money B; expense C; pay
【简答题】活塞式压缩机的主要零部件有：（）、活塞组件、（）、（）、连杆、（）、（）、气阀等。
【简答题】活塞式压缩机的主要零部件有：（）、活塞组件、曲轴、轴承、连杆、十子头、填料、气阀等.
【单选题】The students were all entertained in a Mexican restaurant, at Professor Brian's () .
A.
money
B.
pay
C.
expense
D.
loss
【多选题】解体出厂的往复活塞式压缩机组装前应检查零件、部件的原有装配标记，下列零件和部件应按标记进行组装的有（）。
A.
机身轴承座、轴承盖和轴瓦
B.
同一列机身、中体、连杆、十字头、气缸和活塞
C.
机身与相应位臵的支撑架
D.
填函、密封盒应按级别与顺序进行组装
【单选题】The speech ____________ by Professor Smith was so interesting that the students talked about it all that day.
A.
to be delivered
B.
to be given
C.
being delivered
D.
delivered
【单选题】Professor First of all, allow me to introduce Professor John Brown from Cambridge. Student:______
A.
Hello, Mr. Brown. Are you a doctor?
B.
Moming, Prof. Brown. May I have a question?
C.
Hi, Prof. John Brown. Can I ask what your specialty is?
D.
Hello, Mr. John Brown. What brings you here?
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