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【判断题】
一个完全对称的差分放大器,其共模放大倍数为零。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】outbreak; tentative; eliminate; exterior; furnish; intellectua;l qualification; startle; dynamic; rigorous We didn't understand Jack 's sudden ________ of anger.
【单选题】He told us to use our dictionaries to ______any words we didn't understand.
A.
look for
B.
look out
C.
look up
D.
look at
【简答题】We didn't understand how difficult it was to (分发)a national paper
【单选题】We didn't understand how difficult it was to __ a national paper.
A.
distribute.
B.
attribute.
C.
disturb
【简答题】过一点任意线段变形前后的()是唯一确定的,因此方向余弦是可以确定的。
【单选题】We didn't understand how difficult it was to ______a national paper
A.
Send in
B.
send for
C.
send off
D.
distribute
【简答题】He told us to use our dictionaries to _______any words we didn't understand. [A] look for [B]look out [C]look up [D]look at
【单选题】From her ___ expression, we know that she didn't understand the meaning. [ ]
A.
excited
B.
exciting
C.
puzzled
D.
puzzling
【单选题】We didn't understand how difficult it was to ______a national paper
A.
send in
B.
send for
C.
send off
D.
distribute
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