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【判断题】
输出的具有电流源的差分放大电路，主要靠电流源的恒流特性来抑制温漂。A.
正确
B.
错误
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举一反三
【简答题】We gave out a cheer when the red roof of the cottage came __________ view. A) from B) in C) before D) into
【简答题】We gave out a cheer when the red roof of the cottage came __________ view. A) from B) in C) before D) into
【单选题】Look, this roof is covered with____________leaves.
A.
falling
B.
fallen
C.
fell
D.
felt
【简答题】The p______( 答应 )that the roof should be repaired within two days.
【单选题】Which roof style is the highest grade ?
A.
Double-eave hip roof
B.
Overhanging gable roof
C.
Round ridge roof
D.
Double-eave roof
【简答题】No one is to blame for the ______ (leak) on the roof.
【简答题】Roof plan view is used to indicate.A. the drainage of the roof B. the location of water tanks C. the location of roof repair holes D. the
form and location of doors and windows
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