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【单选题】
热力膨胀阀不供液的原因是（）。
A.
感温包安装位置有误
B.
弹簧力不合适
C.
感温包内膨胀剂泄漏
D.
系统内制冷剂不足
参考答案：
参考解析：
刷刷题刷刷变学霸
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【单选题】How should one invest a sum of money in these days of inflation (通货膨胀) Left in a bank it will hardly keep its value, however high the interest rate is. Only a brave man, or a very rich one, dares to b...
A.
suggest human beings are controlled by a clock
B.
describe why clocks can rule the planet Earth
C.
tell readers what clocks look like
D.
compare clicks to human beings
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A.
Ⅰ+Ⅱ+Ⅲ+Ⅳ
B.
Ⅰ+Ⅱ+Ⅳ+Ⅴ
C.
Ⅱ+Ⅲ+Ⅳ+Ⅴ
D.
Ⅱ+Ⅳ+Ⅴ+Ⅵ