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【单选题】
下列关于蓄电池电眼检查,说法错误的是A.
双色电眼，电眼呈现黑色代表蓄电池正常，电量充足；显示无色或浅黄色代表蓄电池需要更换。
B.
三色电眼，电眼呈现绿色，代表蓄电池正常，含电量超过65%，电解液充足。
C.
一般AGM电池不含电眼，无法对蓄电池进行电眼检查。
D.
目前奥迪标准蓄电池使用两色电眼比较多，2010年前使用三色电眼比较多。
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举一反三
【单选题】—Can you tell me where he is? —Sorry, _____. [ ]
A.
I can
B.
I don't know
C.
I know
D.
I don't
【简答题】环氧丙烷经开环聚合后，可得到不同立构的聚合物(无规、全同、间同)，试写出它们的不同立构体，并大致预计它们对聚合物性能会带来怎样的影响。
【单选题】I really don’t know ___ ___I kept the secret papers.
A.
where was it
B.
it was where that
C.
where it was that
D.
where was it that
【单选题】-Where are the English books? -Sorry, ___. [ ]
A.
I know
B.
I don’t know
C.
it isn’t
D.
they’re not
【简答题】-Where are the English books? ---Sorry, ___. A I know B I don’t know C it isn’t D they’re not
【单选题】I really don’t know ________ I put my wallet after I paid the bill.
A.
where was it
B.
it was where that
C.
where it was that
D.
where was it that
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