首页 试题详情
单选题

You must take good care of the drainage cock of the air control system. Because ______ leads scale formed which might malfunctions the pilot control valve and other instruments.

A the temperature

B the pressure

C the rust

D the humidity

查看答案
正确答案：A （备注：此答案有误）

相似试题

  • 单选题

    You must take good care of the drainage cock of the air control system. Because ______ leads scale formed which might malfunctions the pilot control valve and other instruments.

    答案解析

  • 单选题

    If you refuse to do it,you must be ready to take the（ ）.

    答案解析

  • 单选题

    Will you take the job？We must have a quick（）.

    答案解析

  • 单选题

    You must clean the classroom, you?

    答案解析

  • 单选题

    Living constantly under stress is not good for your health, so you had better sometimes take your mind off your work and _______ .

    答案解析

热门题库