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【单选题】
有A、B、C、D、E五种短周期主族元素,C、D同周期,B、E 同周期,A、B同主族,B、D、E的简单离子具有相同的电子层结构,C的最外层电子数是内层电子数的2倍,单质E可与A、B、D所形成的化合物的水溶液反应并释放出氢气。下列说法不正确的是 [     ]
A.
一定条件下,元素B、E的最高价氧化物对应水化物之间能反应
B.
工业上常用电解法制备B、E的单质
C.
元素A、C组成的化合物常温下不一定呈气态
D.
元素A、D形成的化合物与元素C、D形成化合物的化学键类型完全相同
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【单选题】“ 贫而无怨难,富而无骄易。 ”
A.
人穷志短
B.
富贵容易使人满足
C.
安贫乐道,比低调的奢华更难
D.
做一个富贵的人,比做一个贫穷的人容易
E.
穷人因为抱怨而受穷,富人因为有钱而骄横
【单选题】下面关于FX 2N 系列PLC的串联电路块并联指令ORB的叙述中错误的是:
A.
ORB指令是不带操作软元件的指令
B.
将串联电路块再并联连接时,分支开始用LD、LDI指令表示,分支结束用ORB指令表示
C.
有多条串联电路块并联时,每并联一个电路块用一个ORB指令
D.
并联的电路块数不能超过4个
【简答题】What did a British political scientist say about the meaning of the word “democracy” in the modern world?
【简答题】一直流发电机有四极,31槽,每槽中有12个导体,转速为1450r/min,电枢绕组有2条支路并联,当电枢绕组的感应电势为115V时,每极磁通应为多少?各导体中感应电势的频率为多少?
【单选题】The U.K. finally left the EU on Jan 31, 2020, marking one of the biggest political and economic shifts in modern European history. During the time ___________ was the Prime Minister of the country.
A.
Theresa May
B.
Gordon Brown
C.
Boris Johnson
D.
David Camerson
【简答题】A British political scientist stated that: the word democracy only starts to mean something tangible in the modern world when it is prefixed with other political words. tentative monumental obvious di...
【单选题】按照税收是否可以转嫁,我们可以将其分为( )
A.
直接税和间接税
B.
营业税和增值税
C.
个人所得税和企业所得税
D.
地方税和国家税
【简答题】Once upon a time, kings and queens ruled with absolute authority. They made the laws, they enforced the laws, and they governed without question. Then the people started revolting. In English history ...
【单选题】________ is sometimes claimed to be one of the first works of modern philosophy, especially modern political philosophy.
A.
Edict of Nantes
B.
The Prince
C.
95 Theses
D.
Divine Comedy(《神曲》)
【判断题】The modern-day Republican Party is the world’s oldest active political party.
A.
正确
B.
错误
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