问题 多项选择题

关于尾气压缩机停车联锁(SIS-3003),下列说法正确的是()。

A.蒸汽过热炉及反应器停车联锁(SIS-3001)发生时,引发SIS-3003联锁发生。

B.尾气压缩机进出口压差低低报警发生时,引发SIS-3003联锁发生。

C.吸入罐D-307液面低报警、引发SIS-3003联锁发生。

D.水封罐D-308液面低低报警发生时,将联锁尾气压缩机停机,并关闭阀XV3113,切断软化水进料。

答案

参考答案:A, D

选择题
单项选择题

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

11().

A. the other

B. each other

C. one by one

D. every other one