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【判断题】
对于一个实际的电压源,内阻越小越好。( )A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【简答题】The pilots had to take emergency action to ___________ a disaster .
【单选题】All flights had to be cancelled _________ a result of the pilots' strike.
A.
by
B.
as
C.
of
D.
in
【简答题】色块板式临摹练习
【简答题】The sun rises in the east. ( )
【单选题】某幼儿园组织幼儿进行军训活动。该幼儿园的做法
A.
正确，有利于锻炼幼儿的身体
B.
正确，有利于增强幼儿的责任感
C.
不正确，阻碍了幼儿学习成绩的提升
D.
不正确，未遵循幼儿身心发展的规律
【单选题】According to the passage, Hitler had attempted to
A.
biologically change the pilots to win the war.
B.
develop genetic farming for increasing the food supply.
C.
kill the people he thought of as being inferior.
D.
encourage the development of genetic weapons for the war.
【单选题】All flights had to be canceled ( ) a result of the pilots’ strike.
A.
to
B.
up
C.
off
D.
as
【单选题】_________ the pilots ’ strike, all flights have had to be cancelled.
A.
As to
B.
Because of
C.
Without
D.
But For
【判断题】不锈钢的导电、导热率低，高温强度大。必须采用较高的电极压力，通常采用较短的焊接时间、强有力的内部和外部水冷却，并且要准确地控制加热时间和焊接电流，以防止热影响区晶粒长大和出现晶间腐蚀现象。
A.
正确
B.
错误
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