对电源变压器各绕组电压进行测量时,其输出的空载电压值()。
A.不允许超过标称值
B.应超过标称值的10%
C.略高于标称值但不超过10%
D.允许波动±7%
参考答案:C
——How is your grandma?
——She’s fine. She used to_____TV at home after supper. But now she is used to_____out for a walk.
A.watch;go
B.watching;go
C.watching;going
D.watch;going
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