手提式化学泡沫灭火器内的药剂（）更换，在换药交，发现筒身锈蚀_爱下问搜题

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问题单项选择题

手提式化学泡沫灭火器内的药剂（）更换，在换药交，发现筒身锈蚀应进行液压试验。

A.每月

B.每季

C.每年

答案

参考答案：C

改错题

下面短文中的划线部分是错误的，请改正，不得改变原文意思，并将正确答案写在右边相应题号
的横线上。

     I live in the country and my father was a farmer.
He is now forty-five year old. Because of years of
hard work, he looks old than his age. When I was
young, he used to tell me the important of study.
Father knows few about English and other subjects,
but he usually gives me any good advice on how
to learn my lessons good. He is not only kind to me
but also very strict in me. With his help, I’ve made
great progress. I’ll never forget what him taught
me. I think my father is a best father in the world.

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单项选择题

生产经营单位为了保证安全资金的有效投入，应编制安全技术措施计划，该计划的核心是( )。

A．安全管理措施

B．安全技术措施

C．事故应急预案

D．安全设备投入