表示换算阐瓦压力的常用单位是（）。A.kPa B.kg C.kg/m D.kN

搜题请搜索小程序“爱下问搜题”

问题单项选择题

表示换算阐瓦压力的常用单位是（）。

A.kPa

B.kg

C.kg/m

D.kN

答案

参考答案：D

问答题

Directions.

A. Study the following picture carefully and write an essay in no less than 160-200 words.

B. Your essay must be written clearly on ANSWER SHEET 2.

C. Your essay should meet the requirements below:

1) Interpret the following picture,

2) analyze possible reasons for this situation, and

3) suggest counter-measures.

单项选择题

液压站上电后系统压力值正确的应该是（）.

A.135±5bar

B.145±5bar

C.165±5bar

D.155±5bar