试题与答案

恩氟烷挥发罐开至2%，新鲜气流量为7L/min时，1小时约消耗恩氟烷()A．42.5

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题型：单项选择题

题目：

恩氟烷挥发罐开至2%，新鲜气流量为7L/min时，1小时约消耗恩氟烷()

A．42.5ml

B．52.5ml

C．62.5ml

D．72.5ml

E．82.5ml

答案：

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· You will hear people from the National Food Council complaining to retailers about the high prices they are charging for food products and household goods. They complain that the shops have marked up wholesale prices far too much.
· For each question (23-30), mark one letter (A, B or C) for the correct answer.
· After you have listened once, replay the recording.

Wage bills have increased because

A．

A. staff demand higher rates of pay.

B．

B. staff work overtime.

C．

C. staff have to sell more goods.
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