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【多选题】
重铬酸钾法与高锰酸钾法相比,其优点有()。A.
应用范围广
B.
K2Cr2O溶液稳定
C.
K2Cr2O7无公害
D.
K2Cr2O7易于提纯
E.
在稀盐酸溶液中,不受Cl-影响
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举一反三
【单选题】The Chinese film superstar once said that he ______ remembered as a common person than as a celebrity.
A.
would rather have been
B.
would rather be
C.
would rather to have been
D.
would rather to be
【单选题】The ability to contemplate two contradictory thoughts at once is said to be a mark of genius.
A.
hypothetical
B.
profound
C.
opposing
D.
mathematical
【单选题】以下关于循环转移描述正确的是( )
A.
goto语句只能用于退出多层循环
B.
switch 语句中不能出现continue语句
C.
只能用continue语句来终止本次循环
D.
在循环中break语句不能独立出现
【简答题】串行通信分为()串行通信和()同步串行通信两种。
【单选题】_________ Napoleon once said, attack is the best method of defense.
A.
As
B.
If
C.
Though
D.
So
【简答题】robert frost once said that a poem should begin with delight and end in__________. A.pleasure B.ugliness C.death D.wisdom
【简答题】高压断路器的结构特点是有 装置。
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【单选题】_________ Napoleon once said, attack is the best method of defense.
A.
As
B.
If
C.
Though
D.
So
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