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【单选题】
某汽车R134a空调系统制冷不足,经检测高、低压侧的压力分别为1.95~2.45MPa和0.30~0.40MPa,以下说法正确的是( )。A.
制冷剂正常
B.
制冷剂不足
C.
制冷剂过量
D.
制冷剂有水分
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【单选题】What does the man imply about the type of program the woman mentions?
A.
There are none available in the country where she wants to study.
B.
It may not be the best choice for someone interested in language learning.
C.
Housing costs are usually not included in the program price.
D.
Most students who have participated in one did not enjoy it.
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