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【单选题】
在电阻R上串联一电阻，欲使R上的电压是串联电路总电压的1/n，则串联电阻的大小应等于R的（ ）倍。A.
n+1
B.
n
C.
n?1
D.
1/n
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举一反三
【单选题】—It's terribly cold today, isn't it? —Yes. yesterday. [ ]
A.
So it is
B.
So is it
C.
So was it
D.
So it was
【单选题】— It's so cold today. — Yes,it's colder than it was yesterday. A. so B.more C. very D.much
A.
so
B.
more
C.
very
D.
much
【简答题】请根据原始凭证填写记账凭证,第一张凭证假设收发票没入库,第二张入库凭证,第三张付款凭证
【单选题】It's very cold today so you should ___ your coat.
A.
put on
B.
take off
C.
put up
D.
take over
【单选题】— It's so cold today. — Yes, it's colder than it was yesterday.
A.
some
B.
more
C.
very
D.
much
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