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【单选题】
已知反应 3KCN(aq) + 2KMnO 4 (aq) + H 2 O(l) = 3KCNO(aq) + 2KOH(aq) + 2MnO 2 (s) ,下列表示式中正确的是( )。A.
-2 Δ c ( KMnO 4 )/ Δt = 3Δ c ( KCNO )/ Δt
B.
2 Δ c ( KMnO 4 )/ Δt = 3Δ c ( KCNO )/ Δt
C.
3 Δ c ( KMnO 4 )/ Δt = 2Δ c ( KCNO )/ Δt
D.
- 3 Δ c ( KMnO 4 )/ Δt = 2Δ c ( KCNO )/ Δt
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【单选题】听力原文： The American government, as well as every American individual, is touched by and concerned with inflation, and President Carter has called it our No. i problem. Indeed, inflation deserves this t...
A.
It first become serious about five years ago.
B.
It has finally been brought under control.
C.
It may lead to prosperity.
D.
It has been climbing.
【简答题】符“A”的ASCII值为41H，因此字符“E”的ASCII值为______，前面加上偶校验位后的代码为______H 。
【单选题】听力原文： The American government, as well as every American individual, is touched by and concerned with inflation, and President Carter has called it our No. i problem. Indeed, inflation deserves this t...
A.
It first become serious about five years ago.
B.
It has finally been brought under control.
C.
It may lead to prosperity.
D.
It has been climbing.
【单选题】听力原文：Every individual has the right to be alone except in this boarding school. Once you step forward onto this campus, there's no such thing as privacy. (25)
A.
Everyone wants to attend to this school, as it is a private institution.
B.
It is impossible for you to keep to your own in this boarding school.
C.
We all get along very well in this boarding school, as if of close friends.
D.
It is not important to step into other people's affairs here at this school.
【单选题】Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in____
A.
increased horsepower
B.
reduced efficiency
C.
increased heat loss
D.
lower cylinder pressures
【简答题】短文填词（共10小题;每小题1分,满分10分） Every individual is a member of a group called the community, and it is the duty of every citizen _____ ask what he can do for his community. 小题1:_____ A good citizen _____(相信)...
【简答题】在ASCII码中，字母A的码值是41 H，字母f的码值应为________。
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