煤气罐或炉灶着火时,应关闭燃气阀门,直接盖上锅盖或用湿抹布覆盖,此种灭火方法是()。

题型:单项选择题

问题:

煤气罐或炉灶着火时,应关闭燃气阀门,直接盖上锅盖或用湿抹布覆盖,此种灭火方法是()。

A.冷却法

B.隔离法

C.窒息法

D.抑制法

考点:输气工考试输气工高级输气工高级题库
题型:单项选择题

阅读下面短文,按照要求回答问题。

     This is a boy. His name is Tom. He has a nice cat. It is an English cat. His friends are Lucy and Mike.

They have cats, too. Their names are Mimi and Maomao. They are Chinese cats. The English cat is five.

The Chinese cats are three. They like their cats.

     Today they can't find the English cat and the Chinese cats. They ask an old man, "Where are our cats?" "I don't know." he says. "Are they in the tree?" Tom and Mike ask. "Listen, listen!" Lucy says. "Miaow,

miaow..." "Oh, over there." They go to the tree, and carry (抱) them down.

根据短文内容判断对错,对的选择A,错的选择B。

1. Lucy has a good English cat.

2. Tom has two friends.

3. The English cat is three and the Chinese cats are five.

4. Tom and his friends have three cats.

5. The cats are in the old man's house.

题型:单项选择题

证券公司是指()。

A.依照《公司法》设立的经营证券业务的有限责任公司

B.依照《公司法》和《证券法》设立的经营证券业务的有限责任公司或者股份有限公司

C.依照《证券法》设立的经营证券业务的股份有限公司

D.依照《公司法》和《证券法》设立的经营证券业务的商业银行或者股份有限公司

题型:单项选择题

患者男,46岁。回吸性血涕3个月。查体:锁骨上可触及肿大淋巴结。穿刺细胞学示"转移性鳞癌"。

该鼻咽癌患者属于局部晚期,推荐在放疗期间使用的分子靶向治疗药物为().

A.易瑞沙

B.美罗华

C.西妥昔单抗

D.格列卫

E.特罗凯

F.赫赛汀

题型:单项选择题

定期考试属于()。

A.定比例强化 

B.定间隔强化 

C.变比例强化 

D.变间隔强化

题型:单项选择题

价格需求弹性系数是指需求量变化的百分比与()变化的百分比。

A.价格

B.价值

C.成本

D.利润

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