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【简答题】
控制阀装在 上,压差大,流量小,因此控制阀的尺寸较小。
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【简答题】Which of the following sentences expresses “probability”? [A] You can get there in 20 minutes' walk. [B] He couldn't walk any step farther. [C] The news can't be true. [D] Could I take this home?
【单选题】变压器是一种静止的电气设备，它可以将一种
A.
电压转换为另一种电流
B.
电流转换为另一种电压
C.
电压和电流的交流电转换为同频率的另一种电压和电流
D.
电压和电流的交流电转换为不同频率的另一种电压和电流
【简答题】B Ma is only forty miles from Hong Kong and it is easy to reach. You can get there by sea. It is an interesting place and it had a long history. Ma is part of China and most people living there ...
【单选题】The bank is ______ the street, so go ______ the underground passage， and you can get there.
A.
through; across
B.
through; into
C.
across; over
D.
across; through
【简答题】Ma() is only forty miles from Hong Kong and it is easy to reach. You can get there by sea. It is an interesting place and it had a long history. Ma is part of China and most people living ther...
【简答题】Ma is only forty miles from Hong Kong and it is easy to reach. You can get there by sea. It is an interesting place and it had a long history. Ma is part of China and most people living there ar...
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