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【简答题】
直流放大器存在的主要问题是（）互相影响的问题和所谓（）问题。
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反馈参考答案：
举一反三
【单选题】____ the silkworm makes a liquid in its body and then squeezes it out through special holes.
A.
It makes silk
B.
Making silk
C.
To make silk
D.
Silk is made by
【判断题】Scientists long to understand just how exactly the silkworm manages the process of silk weaving, and now they’ve got a thorough knowledge of it.
A.
正确
B.
错误
【简答题】以下各种存储设备，存取速度最快的是( ) (A)磁介质 (B)硬盘 (C)可擦写光盘 (D)WORM
【单选题】The silkworm is an insect worth _____.
A.
to know
B.
knowing
C.
to be known
D.
being known
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