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【单选题】
我们的组件要保证使用（），功率衰减不超过20％。A.
1年
B.
2年
C.
5年
D.
25年
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【简答题】美国的户外广告有哪些艺术表现形式?
【单选题】It was there, the police believe, ______ she was able to activate the recorder she kept in her bag.
A.
until
B.
which
C.
that
D.
when
【单选题】Mary sat at the table, looked at the plate and ________ her lips.
A.
smacked
B.
opened
C.
parted
D.
separated
【简答题】食品雕刻的表现形式有（）、（）、（）、（）、（）等。
【单选题】Not only ______ a promise ,but she also kept it.
A.
did she make
B.
she made
C.
does she make
D.
had she made
【单选题】She would say she was kept very busy, ____ she meant to refuse his invitation to dinner．
A.
which
B.
by which
C.
that
D.
with which
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