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【判断题】
齿轮泵是液压系统中的动力元件。A.
正确
B.
错误
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【简答题】As I entered the emergency room, she lay there still under a white sheet. The doctor turned around and said, “ We 1 your mother had a stroke( 中风 ) affecting her entire right side. ” My biggest 2 was t...
【简答题】对产品造成污染的微生物可能来自 、人员、 、 及包装材料等。
【判断题】活塞式燃气发动机输气机组的优点Advantages of piston gas engine transmission unit： 允许的压比变化范围大、机组的效率比较高。The range of allowable pressure ratio variation is large and the efficiency of the unit is relatively high.
A.
正确
B.
错误
【简答题】Task 3 Listen to the conversation. Decide whether the statements are true (T) or false (F) according to what you hear. 1. Catherine and Thomas are in the Beauty Global Business Unit offices. 2. The un...
【简答题】unit2-listen A.mp4
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