在汽油中乙醇含量在0-10%时,对金属基本没有腐蚀,但乙醇含量超过15%时,必须添加

题型:单项选择题

问题:

在汽油中乙醇含量在0-10%时,对金属基本没有腐蚀,但乙醇含量超过15%时,必须添加有效的()。

A.腐蚀抑制剂

B.抗腐抑制剂

C.汽油清净剂

D.化学添加剂

考点:中国石化零售管理系统考试中国石化零售管理系统考试题库
题型:单项选择题

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It was Christmas, and there was a big party in the house. Guests came and went, but the party went on. Then the bell rang. Several people shouted, “come in!” A small man opened the front door and came in. Nobody knew him but the host went to meet him and took him to have a drink. The man sat there happily for an hour and drank. Then suddenly he stopped and looked at the host. “Do you know me?” he said. “Nobody asked me to this party. I don’t know you. I don’t know your wife and I don’t know any of your guests. My wife and I wanted to go out in our car, but one of your guests’ car was in front of our gate, So I came here to find him and my wife is waiting in our car for me to come back.” 

60. When the bell rang, the guests ___ .

A. were shouting                 B. were singing and dancing

C. were enjoying themselves        D. were waiting for the small man 

61. The host __ after the small man came in.

A. was glad to see him            B. asked him to have a drink

C. didn’t find him                 D. knew who he was

62. The small man went to the house ___ .

A. to find a man                   B. to have a drink

C. to have a party                  D. to see what was happening

63. Perhaps the small man’s wife got ___ because ___ .

A. hungry; he drank too much   

B. surprised; he couldn’t find the man

C. lonely; he didn’t take her to the party

D. angry; he kept her waiting for a long time

题型:单项选择题

周期循环理论的重点是时间因素。如果投资者能对股市的各个阶段认真分析,明确所处行情属于哪一阶段,就能做出合适的投资计划。 ( )

题型:单项选择题

肝脏和肌肉为主要受累组织的是()

A.糖原累积症Ⅰ

B.糖原累积症Ⅱ

C.糖原累积症Ⅲ

D.糖原累积症Ⅶ

E.糖原累积症Ⅴ

题型:单项选择题

近年来,饭店、酒楼包房的“最低消费”成为人们关注的焦点。设置“最低消费”的作法()

①体现了生产为消费创造动力

②侵犯了消费者的选择权、公平交易权

③违背了市场经济的公平原则

④有利于市场经济的公平竞争

A.①②

B.②③

C.②④

D.①④

题型:单项选择题

以下有关糖尿病发病机制的叙述中.最正确的是

A.糖代谢障碍疾病

B.胰岛素代谢障碍

C.脂肪代谢障碍疾病

D.蛋白代谢障碍疾病

E.主要是胰岛素分泌或生成异常

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