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举一反三
【单选题】You are attempting to parallel two AC generators, and the synchroscope(同步器) pointer is revolving in the fast direction. This indicates that the frequency of the incoming machine is ______.
A.
higher than the bus frequency
B.
lower than the bus frequency
C.
the same as the bus frequency but out of phase with it
D.
the same as the bus frequency and the circuit breaker may be closed at any pointer position
【简答题】婴儿出生第三天,进行沐浴,用艾熬水,给小孩洗澡,叫做____。
【单选题】产生焦头的原因不包括（）
A.
灌注针头的毛细管作用而呈的缩水现象
B.
灌药时给药太急，溅起的药液沾在安瓿壁上
C.
针头安装不正，给药时药液沾瓶
D.
压药与针头打药的行程配合不好
E.
针头升降轴不够润滑，针头起落迟缓
【单选题】You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow direction. This indicates that the frequency of the incoming machine is
A.
higher than the bus frequency
B.
lower than the bus frequency
C.
file same as file bus frequency but out of phase with it
D.
the same as the bus frequency, and the circuit breaker may be closed at nay pointer position
【单选题】产生焦头的原因不包括
A.
灌药时给药太急，溅起药液在安瓿壁上
B.
灌注针头的毛细管作用而呈的缩水现象
C.
针头安装不正，给药时药液沾瓶
D.
针头安装不正，给药时药液沾瓶
E.
针头升降轴不够润滑，针头起落迟缓
【简答题】—You need to start exercising again, I guess. —Well, I have been attempting ________ (eat) less recently. But as you know, my mother is such a good cook.
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