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【简答题】
汽车A/C工作时，时热，低压侧出现正压、负压交替的现象，试述故障的原因和排除方法。
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举一反三
【单选题】What did the boy say about his early use of the languages?
A.
He would choose properly which language to use.
B.
He bad to use English most of the lime.
C.
His parents wanted him to use his native tongue.
D.
Somebody told him what lie should do about it.
【单选题】What did the woman say about the loss of the bags?
A.
She would check with the bellboy again.
B.
She had dealt with similar cases before.
C.
The case must be reported to the guards.
D.
She would see to the matter personally.
【单选题】What did the boy say about his early use of the languages?
A.
He would choose properly which language to use.
B.
He had to use English most of the time.
C.
His parents wanted him to use his native tongue.
D.
Somebody told him what he should do about it.
【简答题】泪道包括 、 、 和 ,后者通过鼻腔,开口于 。
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