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【单选题】
T ℃时,在1 L的密闭容器中充入2 mol CO 2 和6 mol H 2 ,一定条件下发生反应: CO 2 (g)+3H 2 (g) CH 3 OH(g)+H 2 O(g)  △ H =-49.0 kJ·mol -1 测得H 2 和CH 3 OH(g)的浓度随时间变化如下图所示。下列说法不正确的是 时间 c (H 2 )/mol·L -1 c (CH 3 OH)/mol·L -1 v (正)和 v (逆) 比较 t 0 6 0 ? t 1 3 1 v (正)= v (逆)
A.
t 0 ~t 1 时间内 υ (H 2 )=3 /(t 1 - t 0 ) mol·(L·min) -1
B.
t 1 时,若升高温度或再充入CO 2 气体,都可以提高H 2 的转化率
C.
t 0 时, v (正)> v (逆)
D.
T ℃时,平衡常数 K = 1/27,CO 2 与H 2 的转化率相等
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举一反三
【单选题】The journal is:
A.
A listing of all open accounts and their balances.
B.
A chronological record of transactions.
C.
A listing of all accounts used to record the business transactions.
D.
Not necessary to record transactions.
【多选题】关于成长与发展,以下说法正确的是
A.
人的生长发展遵循预期的特定顺序
B.
成长和发展在人的整个生命阶段不断进行,是一个连续的过程,但发育是分阶段的
C.
成长和发展存在不平衡性
D.
成长发展的顺序性是按照由上到下、由近到远
E.
成长有关键期
【单选题】The process of recording transactions in the journal is termed
A.
posting
B.
journalizing
C.
the trial balance
【单选题】By saying '... the prophecy becomes self-fulfilling ...' (Para. 2). the author means that ______.
A.
girls Will turn out to be less valuable than boys
B.
girls will be capable of realizing their own dreams
C.
girls will eventually find their goals in life beyond reach
D.
girls will be increasingly discontented with their life at home
【简答题】(Para. 2) 1 What does the author mean by saying “In a hutong, much is communal?” (Para. 3-4) 2 What did the government do to boost the athleticism and health of the resident? (Para. 6) 3 How did the r...
【简答题】Read para. 9 and para. 23 aloud. You can record your reading in one file. Do not worry about the noise in between when you have to turn the pages.
【判断题】项目活动清单是对项目工作分解结构的进一步细化和扩展。( )
A.
正确
B.
错误
【简答题】The process of recording a transaction in the journal is called ( ).
【单选题】江苏省市政工程计价定额桥涵册中安装工程定额中 小型构件安装已包括( )场内运输,其他构件均未包括场内运输。
A.
100m
B.
150m
C.
200m
D.
250m
【单选题】In Para. 9, what happend to hutong in most of Old Beijing at the turn of the century?
A.
Large numbers of hutong of old Beijing were pulled down and few sections of the city were protected.
B.
Developpers sold few of old Beijing and many sections of the city were protected.
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