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【判断题】
RC一阶电路的零状态响应, 按指数规律上升,ic按指数规律衰减。
A.
正确
B.
错误
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举一反三
【单选题】It was not until 1938 _________ the first colour TV programme was broadcast.
A.
which
B.
that
C.
when
D.
on which
查看完整题目与答案
【单选题】- I wonder if I could use your dictionary? - ______
A.
Go on.
B.
Go ahead.
C.
Go up.
D.
Go away.
查看完整题目与答案
【单选题】Television, which made its first serious appearance in 1939, did not become common until the early 1950s. Since then, millions of children 11 in front of the set, and many people now worry about the e...
A.
wish
B.
wishes
C.
with
D.
whisper
查看完整题目与答案
【单选题】Not until the boys were old enough to understand how commercials tried to promote consumption were they allowed to watch sports programs on commercial television. The basic motto of the household was ...
A.
They were never allowed to watch commercials.
B.
They often watch some nature and sports programs.
C.
They were only allowed to watch television in the evening.
D.
Whenever there was any chance, they were asked to play outside instead of sitting in front of television.
查看完整题目与答案
【单选题】已知 298K 时,反应 4NH 3 ( g ) + 5O 2 (g) === 4NO(g) + 6H 2 O(l) Δ f G m θ /kJ · mol -1 -16.5 0 86 -237 可以判断此反应在 298K 和标准状态下
A.
自发进行
B.
不自发进行
C.
处于平衡状态
D.
难以判断
查看完整题目与答案
【单选题】Television, which made its first serious appearance in 1939, did not become common until the early 1950s. Since then, millions of children 11 in front of the set, and many people now worry about the e...
A.
reaches
B.
rich
C.
reached
D.
reaching
查看完整题目与答案
【单选题】Some local companies are great efforts to _____ with foreign companies for a share of the market.
A.
connect
B.
combine
C.
compete
D.
compare
查看完整题目与答案
【单选题】反应4NH3(g)+5O2(g)→4NO(g)+6H2O(l)在298K、100kPa进行时的反应焓变 ( )kJ。
A.
-12.39
B.
12.39
C.
-2.48
D.
2.48
查看完整题目与答案
【单选题】She asked if I ________ to Beijing tomorrow. If I ________, she will go with me.
A.
go; go
B.
go; will go
C.
will go; go
D.
will go; will go
查看完整题目与答案
【单选题】反应 3NO 2 (g)+H 2 O(g)→2HNO 3 (l)+NO(g) 在298K、100kPa进行时的反应焓变 ( ) 。
A.
-2.48
B.
2.48
C.
-7.44
D.
7.44
查看完整题目与答案
相关题目：
【单选题】It was not until 1938 _________ the first colour TV programme was broadcast.
A.
which
B.
that
C.
when
D.
on which
查看完整题目与答案
【单选题】- I wonder if I could use your dictionary? - ______
A.
Go on.
B.
Go ahead.
C.
Go up.
D.
Go away.
查看完整题目与答案
【单选题】Television, which made its first serious appearance in 1939, did not become common until the early 1950s. Since then, millions of children 11 in front of the set, and many people now worry about the e...
A.
wish
B.
wishes
C.
with
D.
whisper
查看完整题目与答案
【单选题】Not until the boys were old enough to understand how commercials tried to promote consumption were they allowed to watch sports programs on commercial television. The basic motto of the household was ...
A.
They were never allowed to watch commercials.
B.
They often watch some nature and sports programs.
C.
They were only allowed to watch television in the evening.
D.
Whenever there was any chance, they were asked to play outside instead of sitting in front of television.
查看完整题目与答案
【单选题】已知 298K 时,反应 4NH 3 ( g ) + 5O 2 (g) === 4NO(g) + 6H 2 O(l) Δ f G m θ /kJ · mol -1 -16.5 0 86 -237 可以判断此反应在 298K 和标准状态下
A.
自发进行
B.
不自发进行
C.
处于平衡状态
D.
难以判断
查看完整题目与答案
【单选题】Television, which made its first serious appearance in 1939, did not become common until the early 1950s. Since then, millions of children 11 in front of the set, and many people now worry about the e...
A.
reaches
B.
rich
C.
reached
D.
reaching
查看完整题目与答案
【单选题】Some local companies are great efforts to _____ with foreign companies for a share of the market.
A.
connect
B.
combine
C.
compete
D.
compare
查看完整题目与答案
【单选题】反应4NH3(g)+5O2(g)→4NO(g)+6H2O(l)在298K、100kPa进行时的反应焓变 ( )kJ。
A.
-12.39
B.
12.39
C.
-2.48
D.
2.48
查看完整题目与答案
【单选题】She asked if I ________ to Beijing tomorrow. If I ________, she will go with me.
A.
go; go
B.
go; will go
C.
will go; go
D.
will go; will go
查看完整题目与答案
【单选题】反应 3NO 2 (g)+H 2 O(g)→2HNO 3 (l)+NO(g) 在298K、100kPa进行时的反应焓变 ( ) 。
A.
-2.48
B.
2.48
C.
-7.44
D.
7.44
查看完整题目与答案