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问题 单项选择题

在密封剂进行固化处理时，下列做法哪些是正确的？（）

A.应保持温度低于华氏60度，相对湿度为百分之五十的理想固化环境。

B.为了加速密封剂的固化处理，可以用温度在华氏120度以上的热空气进行加热。

C.在密封剂固化处理过程中，必须使涂密封剂的搭界面保持紧密接触。

D.应保持温度低于华氏77度，相对湿度为百分之七十的理想固化环境。

答案

参考答案：C

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要提高啤酒的生物稳定性，可以采用（）和（）。
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填空题

Questions


·You will hear five conversations taking place in restaurants and the customers are complaining about something.
·Before you listen, read the list of statements, five of which are summaries of how these problems are solved.
·Then listen carefully and match the statements (A-F) with the conversations that are about them respectively.
·There is one extra statement that you don’t need to use. You will hear the passage twice.
A. it is suggested that she change her order to some sirloin because it is tender.
B. She is asked to send in the bill if she likes to have it cleaned.
C. The head waiter goes to fetch some clean ones immediately.
D. He offers to sponge it with a little warm water.
E. He is advised to choose another wine instead.
F. The head waiter will deal with it himself.

Questions


·You will hear five conversations taking place in restaurants and the customers are complaining about something.
·Before you listen, read the list of statements, five of which are summaries of how these problems are solved.
·Then listen carefully and match the statements (A-F) with the conversations that are about them respectively.
·There is one extra statement that you don’t need to use. You will hear the passage twice.
A. it is suggested that she change her order to some sirloin because it is tender.
B. She is asked to send in the bill if she likes to have it cleaned.
C. The head waiter goes to fetch some clean ones immediately.
D. He offers to sponge it with a little warm water.
E. He is advised to choose another wine instead.
F. The head waiter will deal with it himself.
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