问题 单项选择题 B型题

过氧乙酸属于()

A.清洁剂

B.高效消毒剂

C.灭菌剂

D.中效消毒剂

E.低效消毒剂

答案

参考答案:C

解析:1.低效类消毒剂。杀灭细菌繁殖体、部分真菌和亲脂病毒,如氯己定(洗必泰)、苯扎溴铵。 2.灭菌剂。能杀灭一切微生物,包括芽胞,如戊二醛、过氧乙酸、甲醛、环氧乙烷。 3.中效类消毒剂。能杀灭细菌繁殖体、真菌、病毒等除芽胞以外的其他微生物,如碘酊、聚维酮碘、乙醇、部分含氯消毒剂。

单项选择题
单项选择题

I got a job teaching special education at a school in Coachella, California, a desert town about 170 miles from home. It was no (1) job. Street gangs (2) around the school after dark."Be careful," Dad warned me during one of my frequent weekend (3) home. He was concerned about my living (4) , but I needed to be on my own.One evening, I stayed after school to rearrange my classroom. (5) , I turned out the light and closed the door. Then I (6) toward the gate. It was (7) ! I looked around. Everyone had gone home.After (8) all the exits, I found just enough (9) to squeeze under a gate in the back of the school. Then I walked toward my car, parked in a field behind the building.Suddenly I heard voices. I (10) around and saw at least eight boys following me. (11) my pace, I reached into my shoulder bag to get my key. I (12) all over the inside of my handbag. But the key wasn’t (13) ! Dear Lord, please help me, I prayed (14) . Suddenly, my fingers touched a loose key in my purse. I didn’t even know if it was for my car, but I took it out and (15) it. It worked!I opened the door, slid in and locked it—just (16) the teenagers surrounded the car. Trembling , I started the engine and (17) away. When I returned to my apartment, the phone was ringing. It was my Dad. I didn’t tell him about my experience; I didn’t want to (18) him. "Oh, I forgot to tell you!" He said, "I had a(n) (19) car key made and slipped it into your purse—just (20) you ever need it.

第(20)空应选择()

A.even if

B.on condition that

C.in case

D.in time