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【单选题】
存储周期是指A.
存储器的写入时间
B.
存储器进行连续写操作允许的最短时间间隔
C.
存储器进行连续读或写操作所允许的最短时间间隔
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举一反三
【单选题】Why did Abubakar take pictures of children?
A.
She wanted to show they are in cruel conditions.
B.
She wanted to show they are happy despite their sufferings.
C.
She wanted to show they are different from the old.
D.
She wanted to show they are victims of war.
【单选题】Why did some managers survive the down-sizings?
A.
Because they are always honest in their work.
B.
Because they know how to please their employers.
C.
Because they are adept at making a proft.
D.
Because they have developed a good personnel networking.
【简答题】《煤矿安全规程》规定采掘工作面进风流中CO2的浓度不得超过( )% 。 A 0.5 B 0.75 C 1.0
【单选题】Why did most people spend less time on their hobbies in early years?
A.
Because they were not interested in hobbies.
B.
Because there were not any activities for them to take part in.
C.
Because they were busy making a living.
D.
Because they were healthy.
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