接收仓料位高高报警时,引发的联锁动作是()。
A、不让第一反应器PDS出料
B、不让中间转移罐排放气体
C、不让中间转移罐过滤器排放气体
D、关闭插板阀
参考答案:A
Many difficulties have ____ as a result of the change over to a new type offuel. [ ]
A. risen
B. raised
C. arisen
D. arrived
She could have given us a better impression,but she ______ a very short mini skirt.
A.wear
B.wears
C.wore
D.is worn