用塞尺检查发电机炭刷的长度。如超过极限，应予更换。
错误
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The( )ofyellowandblueformgreen.
—Doyoumind__________here?
—________.
Theredcolorcanstimulateallour____,includingappetite.
Rock:______.
Sharon:Verywell,andtheexperimentisnearlyfinished.
Thereisno( )betweenthenations.