危险化学品安全技术储油罐着火爆炸预防措施错误的是( )。 A．_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

危险化学品安全技术

储油罐着火爆炸预防措施错误的是( )。

A．严禁穿铁钉鞋、带火种上罐，应使用防爆手电、工具

B．定期测试防雷接地网，接地阻值小于10Ω

C．阻火器必须良好

D．油罐区动(用)火，安全防火措施要到位

答案

参考答案：B

完形填空

完形填空。

     I have an English friend at school.  1  name is Tom. He is eleven.  2 are not in  3 class.  4 we are in the
same grade. He is in 5 , and I am in Class 2.  6 mother is a nice 7 . She comes from London. She teaches
me 8 . She has big blue eyes and  9  blond hair. She often wears a pair of blue pants and white shoes. She is
our friend, too. We like  10 very much.

( )1. A. He
( )2. A. I and he
( )3. A. same
( )4. A. But
( )5. A. Class 2
( )6. A. Tom’s
( )7. A. teacher
( )8. A. English
( )9. A. a
( )10.A. him

B. His
B. He and I
B. the same
B. And
B. Grade 3
B. Her
B. student
B. Chinese
B. /
B. her

C. Her
C. Me and him
C. the different
C. Or
C. Class 3
C. Toms
C. doctor
C. England
C. an
C. you

单项选择题

工程网络计划“资源有限，工期最短”优化的目的是为了寻求（）。

A．资源均衡使用时的最短工期安排

B．最短工期条件下的资源均衡安排

C．最低成本时的最短工期安排

D．资源有限条件下的最短工期安排