搜题请搜索小程序“爱下问搜题”
问题 单项选择题

柱塞泵主要由直接输送的液体的泵缸部分和使柱塞作往复运动的传动部分组成，结构特点叙述错误的为（）。

A、卧式

B、双重密封

C、重心离轴近

D、动静平衡差

答案

参考答案：C

听力题

单词填空(共10小题；每小题0.5分，满分5分)

小题1:Karl has a t________ for music, so he could learn to sing the song in a short period.

小题2:As you know, a good diet is b_________ to your health.       

小题3:Education is closely related to the development of a country. So education should be a universal right but not a p__________. 

小题4:I am o_________ with my office work and have hardly any time for housework.

小题5:We hope to have an income of an average a_________ growth rate of 10%.

小题6:The children that _____(目击)the earthquake should be given psychological support.

小题7:The war came to an end, to the _________ (满意) of everybody.

小题8:Mail comes to the _________ (偏僻的) village once a week. 

小题9:I could see James was terrified of being _________(放弃).

小题10:All the students were active in ___________ (捐献) their blood to those in need.
查看答案
单项选择题

劳动保护工作内容包括的内容是劳动保护法规、安全技术、（）。

A、生产质量

B、质量卫生

C、生产成本

D、劳动卫生
查看答案