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【简答题】
为了在发动机熄火后能够在一定时间内维持一定的系统油压,便于发动机的再次启动,电动汽油泵出油口安装有_____,在油泵停转后自动关闭,阻止燃油流回油箱。
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举一反三
【单选题】采用电极法测定时,其测量的电位差与被测离子的活度呈
A.
线性关系
B.
能斯特响应
C.
高斯曲线
D.
平方根关系
【单选题】听力原文:W: Why are you so happy today? M: I ran across the long-sought-after book on the subject in the public library. What did the man do today?
A.
lie went to the public library.
B.
He bought the book he had been looking for.
C.
He ran across the street to the library.
D.
He bought the book merely by chance.
【单选题】纽约外汇市场上,当汇率由1美元=108日元变为1美元=112日元时,说明(    )升值,(    )贬值。
A.
日元美元    
B.
美元日元
C.
美元欧元    
D.
无法确定
【单选题】Why shouldn't you use clichés in your writing?
A.
They are considered boring and corny
B.
It's hard to figure out thier true meanings
C.
They are not used to oftern enough to be well-known
D.
They use complext, tricky words
【简答题】—Dear me! I've been in America for a month. —______you are settled, why don't you take up some serious study? [A] If [B] Now that [C] When [D] Even if
【单选题】Why are you still working on this project? It ’ s 4 o ’ clock in the afternoon and you are supposed _______it by noon.
A.
to finish
B.
to be finishing
C.
to have finished
D.
to have been finishing
【单选题】- Why are you in such a hurry? - I studied very hard for my math exam last night, so I slept late .
A.
stayed up late
B.
didn’t go to bed
C.
got up late
D.
went to bed late
【单选题】— Why are you in such a hurry? — Don't you remember we ____ be home by 8 pm. to see our favorite TV show? [     ]
A.
can
B.
would
C.
must
D.
may
【判断题】苯丙酮酸在体内的堆积对中枢神经系统有毒害作用,会导致患病的儿童智力发育障碍。
A.
正确
B.
错误
【单选题】对车站而言,特别重要的房间仅为( )。
A.
信号设备室
B.
AFC票务管理室
C.
通信设备室
D.
车控室
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