输气站切换流程时要先开启备用流程,后关闭().A.进站阀门 B.生产_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

输气站切换流程时要先开启备用流程,后关闭().

A.进站阀门

B.生产流程

C.出站阀门

D.站控系统

答案

参考答案：B

完形填空

       This is a   1    of David's family. This man    2   Mr Brown.   3   is David's father. He is a
worker.   4   woman is Mrs. Brown.  5   is David's mother. She is a teacher. Who   6   this boy
and   7    girl? The    8   is David, Mr. Brown's son. The girl is Tina, Mr. Brown's   9   .Tina is
  10  .David and Tina are brother and sister.

( )1. A. map
( )2. A. am
( )3. A. Her
( )4. A. This
( )5. A. Her
( )6. A. am
( )7. A. a
( )8. A. boy
( )9. A. sister
( )10.A. David

B. book
B. is
B. She
B. These
B. She
B. is
B. an
B. boys
B. cousin
B. Davids

C. photo
C. are
C. His
C. A
C. His
C. are
C. this
C. girl
C. daughter
C. David's

D. room
D. be
D. He
D. An
D. He
D. be
D. these
D. girls
D. brother
D. the David

填空题

七大洲是、、、、南极洲、欧洲和大洋洲。（按面积从大到小的顺序写）