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【单选题】
机读文献又称为( )。
A.
声像型文献
B.
机读文献
C.
电子文献
D.
印刷文献
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举一反三
【单选题】Jim, as well as his sisters, to talk to his parents at present because of misunderstanding.
A.
is prepared
B.
was prepared
C.
are prepared
D.
were prepared
【简答题】After his long talk with his father,____________________________(他的脸上很快就又露出自信的神情).
【单选题】一般把活塞的头部制成上小下大的阶梯形或截锥形,且头部直径( )裙部
A.
小于
B.
等于
C.
大于
【单选题】When a function just needs to use a copy of an argument passed to it, the argument should normally be passed ________.
A.
by variable
B.
by value
C.
by reference
D.
as a string
【判断题】矿棉板吊顶材料因为防火性能好,隔热,不燃,所以大量用在家庭吊顶中。
A.
正确
B.
错误
【判断题】矿棉板吊顶材料因为防火性能好,隔热,不燃,所以大量用在家庭吊顶中。
A.
正确
B.
错误
【单选题】In his talk, the____ Prime Minister expressed his satisfaction, ____ that he had enjoyed his stay here. [     ]
A.
visiting, add
B.
visited, adding
C.
visiting, adding
D.
visited, added
【单选题】When invited to talk about his achievements, he refused to blow his own ______ and declined to speak at the meeting.
A.
trumpet
B.
whistle
C.
bugle
D.
flute
【单选题】Bob tried to sweet-talk his mother into letting him go out. But when he saw his sweet talk________, he lost his temper.
A.
hadn’t worked
B.
wasn’t working
C.
isn’t working
D.
doesn’t work
【单选题】上升沿检出开始梯形图逻辑运算的指令是( )
A.
LD
B.
LDI
C.
LDP
D.
LDF
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