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【单选题】
MCS-51单片机背部定时/计数器是()计数器。A.
14位加法
B.
16位加法
C.
16位减法
D.
14位减法
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举一反三
【单选题】How long did you spend ____ your new house yesterday?
A.
to decorate
B.
decorate
C.
decorating
D.
decorated
【单选题】---How long did you spend going through the jungle during the exciting vacation? ---Going through the jungle _____us about three weeks.
A.
spent
B.
used
C.
paid
D.
took
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