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【单选题】
常用数据备份方式包括完全备份. 差异备份和增量备份,数据复时使用备份数最多和最少的方式分别为A.
增量备份和差异备份
B.
差异备份和增量备份
C.
增量备份和完全备份
D.
完全备份和增量备份
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【单选题】如图，OC是∠AOB的平分线，OD是∠BOC的平分线，那么下列各式中正确的是（ ）
A.
∠COD= 1 2 ∠AOB
B.
∠AOD= 2 3 ∠AOB
C.
∠BOD= 1 2 ∠AOD
D.
∠BOC= 2 3 ∠AOD
【单选题】By successfully_____ the baton, the Chinese team finally won the championship.
A.
pass
B.
passes
C.
passed
D.
passing
【单选题】—What did you do during your summer holiday? —I spent my holiday _____ English in Summer Classes. [ ]
A.
improving
B.
improves
C.
to improve
D.
improve
【单选题】—Have you spent the whole holiday studying? — . [ ]
A.
Yes, I have
B.
Yes, I haven't
C.
No, I have
【单选题】The photo brought me back to the memory of the time in Qingdao, _________ I spent my summer holiday by the seaside with my friends.
A.
that
B.
when
C.
which
D.
what
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