使用易熔塞的压力容器，压力容器所能承受的最大压力至少满足制冷剂临界压力的（）倍。
A、2.5
B、1
C、5
参考答案：A
--- It was really very kind of you to give me a lift home.
--- Oh, don’t mention it. I past your house anyway.
A．was coming
B．will come
C．had come
D．have come
How do you read the number “3,054,003”?
A．three million, and fifty-four thousands, three
B．three million, and fifty-four thousand and three.
C．three million, fifty-four thousand, three.
D．three million, fifty-four thousand and three.
