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【简答题】
离心泵的轴封通常有（）和（）两种形式。泵的叶轮轴向力的平衡通常采用（）方法解决。
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举一反三
【单选题】In 500 B.C., Chinese people fought about each of the following EXCEPT ____________.
A.
land
B.
money
C.
suffering
D.
power
【简答题】用熔断器和接触器组成的回路应装设带断相保护热继电器或用带接点的熔断器作为（）保护。
【单选题】In history, many famous women _____ bravely_____ equal rights. [ ]
A.
fought; for
B.
had fought; for
C.
fought; with
D.
have fought; against
【简答题】用熔断器和接触器组成的回路应装设带断相保护热继电器或用带接点的熔断器作______保护。
【单选题】In the video, two Chinese people fought for the bill, who sneak out first?
A.
the woman
B.
the man
C.
No one wanted to pay the bill.
【单选题】Which Chinese translation is right to “The best battle is the battle that is won without being fought”?
A.
不战而胜，上也。
B.
胜兵先胜而后求战。
C.
上兵伐谋。
D.
知彼知己。
【简答题】The Chinese fought hard for 8 years and _______(drive)the Japanese aggressors out of China.
【单选题】In the video, two Chinese people fought for the bill. who sneaked out first?
A.
the woman
B.
the man
C.
they didn’t pay for the bill.
【简答题】The China-Japan war fought between 1937 and 1945 is known as the 抗日战争 in Chinese hitory.
【简答题】设 int a=2,b=3;float x=3.5,y=2.5; 则表达式(float)(a+b)/2+(int)x%(int)y的值为
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