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【单选题】
变压器（）基本上是中的功率损耗，简称铁损。A.
短路损耗
B.
空载损耗
C.
涡流损耗
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皮皮学刷刷变学霸
举一反三
【单选题】One morning he found ____ handbag. There was ____ "s" on the corner of ____ handbag.
A.
a, an; the
B.
a; a; the
C.
a; a; a
D.
the; an; a
【简答题】What did Peter find when he woke up one morning? He found that the floor of his room was ______.
【简答题】Why do many companies still hesitate to use the Web to expand its market though the Web has proved to be more than a fashion today?
【单选题】One morning he found a bag. There was ______ “s” on the corner of ____bag.
A.
a, a
B.
a, the
C.
an, a
D.
an, the
【简答题】闭环控制系统的反馈装置是装在
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