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A B C D

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Question 47
You work in the Market Survey institute. After careful research ,you receive four charts.
Read the following charts which show , the trend of consumer confidence, real hourly wages, employment and credit development. The years are given ,while the other numbers are not presented. But the lines in the charts clearly show , the directions of development.
Use the information in the charts to write a report (about 100- 120 words) analyzing the reason why the consumer confidence increases.
Write on your Answer Sheet.

确定压缩机排气量的因素为()。

A. 吸气温度
B. 排气温度
C. 输气系数

当压力一定时,对饱和蒸气继续加热,其温度升高,此时的蒸气叫做()蒸汽。

A. 过热
B. 饱和
C. 低压

拆除作业人员必须配备相应的(),并正确使用。

A. 劳动保护用品
B. 作业工具
C. 通讯工具