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【单选题】
环烷氧化反应中烃的碳氢键反应活性的顺序( )
A.
叔>>伯
B.
伯>>叔
C.
叔>伯>
D.
>伯>叔
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参考答案:
举一反三
【单选题】Congress can make laws to do the following except
A.
to create lower federal courts
B.
to regulate marriage and divorce
C.
to approve a budget for the federal government
D.
to regulate foreign and interstate commerce
【判断题】电子节气门利用节气门位置传感器的信号来控制全电子节气门的开度
A.
正确
B.
错误
【单选题】It can be inferred from the passage that ______.
A.
the Congress was wise to repeal Prohibition
B.
the Prohibition Era was characterized by a decrease in crime and drunkenness
C.
during Prohibition, most Americans stopped drinking
D.
laws should be passed to ban the sale of alcoholic beverages
【单选题】时延简单理解就是指数据包第一个比特进入路由/交换设备到()个比特从路由/交换设备输出的时间间隔。
A.
本数据包第一
B.
本数据包最后一
C.
上一个数据包的第一
D.
上一个数据包的最后一
【单选题】在假设性问题中从题干的论据论体,论据论点这个整体来考虑是遵循()原则。
A.
整体性
B.
从弱
C.
理由充足
D.
从强
【单选题】Congress shah make no law respecting an establishment of religion, or prohibiting the free exercise______ or abridging the freedom of speech, and the right of the people peaceably to assemble.
A.
therefore
B.
therein
C.
thereby
D.
thereof
【单选题】一个信号源的电压Us=40V,内阻R0=200Ω,通过理想变压器接RL=8Ω的负载。RL'为使负载电阻换算到一次测的阻值=200Ω,以达到阻抗匹配,则变压器的变化K应为 ( )。
A.
50
B.
25
C.
10
D.
5
【单选题】pH玻璃电极对下列哪种离子相应(      )
A.
钠离子
B.
氯离子
C.
钾离子
D.
氢离子
【单选题】It can be inferred from the last paragraph that the author ______.
A.
advocates the Congress's rejection of ownership rules.
B.
calls for the Congress's approval of FCC's decision.
C.
expresses his concern over the future of media companies.
D.
speaks up for big media companies as well as poor people.
【单选题】If a bill is vetoed by the President, the Congress can override the veto by_______________.
A.
Introducing a new bill
B.
The support of a two thirds majority
C.
The support of either house
D.
Impeaching the President
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