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【单选题】
Oh dear! The key the door in the room.A.
with, forgot
B.
to, is left
C.
by, forgot
D.
with, is left
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举一反三
【单选题】He came to a point _______ there was no more road to follow, and before him he could see nothing but a thick forest.
A.
where
B.
what
C.
which
D.
that
【单选题】It was some time before he ______ after being knocked out.
A.
came to
B.
came back
C.
came over
D.
came across
【单选题】下列四个数据中为四位有效数字的是( ) (1)0.0012 (2)0.1200 (3)0.1002 (4)pH=10.02 A 、1,2 B、2,3,4 C、3,4 D、2,3
A.
B.
C.
D.
D
【单选题】He came to a point ______ there was no more road to follow, and before him he could see nothing but a thick forest.
A.
that
B.
what
C.
which
D.
where
【简答题】对真值+55用8位二进制数的反码表示为()。A. A:A.01001000 B. B:B.00110111 C. C:C.10110111 D. D:D.10110110
【简答题】世界人口在2011年时达到70亿,并以每年1.1%的速度增长,什么时候人口达到约80亿?【源代码及伪代码】
【简答题】对真值+55用8位二进制数的反码表示为()。(5.0分)A.A.01001000 B.B.00110111 C.C.10110111 D.D.10110110
【单选题】下列四个数据中为四位有效数字的是( ) (1)0.0012 (2)0.1200 (3)0.1002 (4)pH=10.02
A.
1,2
B.
2,3,4
C.
3,4
D.
2,3
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