单项选择题
At constant temperature, the pressure of a gas is inversely proportional to its volume.
A.温度不变,则气体压力和其体积成反比。
B.在温度不变的情况下,则气体压力和其体积成相反的比例。
C.在经常的温度下,则气体压力反过来和其音量成反比。
D.温度不变,气体压力则相反和其体积是成比例的。
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单项选择题
Customers prefer to purchase our products though they seem to be higher in price.
A.顾客情愿购买我们那些价格看上去较高的产品。
B.虽然我们的产品价格似乎高了一些,顾客仍喜欢购买。
C.消费者宁愿买我们的产品,不过它们的价格似乎高了一些。
D.尽管我们的产品价格很高,人们虽不情愿,但仍然购买。
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单项选择题
______ , he can quickly find out what's wrong with the machine.
A.Having been well trained
B.Having well trained
C.To be well trained
D.To have been well trained
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