下列哪种为产热营养素A.维生素 B.糖类 C.水 D.矿物质 E.纤维素

题型:单项选择题

问题:

下列哪种为产热营养素

A.维生素

B.糖类

C.水

D.矿物质

E.纤维素

考点:临床执业医师临床执业医师56
题型:单项选择题

At a supermarket in County Durham, England, the workers are getting ready for some lessons in sign language (手语). They are excited to meet their teacher — two-year-old Diana Graham. The little girl will teach them how to communicate with deaf(聋的) customers(顾客).

Diana is a wonder child. She began to use sign language to “speak” to her deaf mother before she said her first word. So whenever the phone rings or there’s a knock at the door, her mother can be quickly told by her.

Diana understands the sign language well. Her mother even reads story books to her in sign language. Her grandmother said, “Diana started signing at about five months. She is so clever for her age.”The supermarket officials couldn’t think of a better sign language teacher for their workers. So they asked Diana to give some lessons to the workers. They hoped that her lessons would help the workers communicate better with deaf customers during their shopping.

小题1:Who will teach the workers to learn sign language?

A.Diana

B.Diana's mother

C.The supermarket offices

D.the worker themselves小题2:When did Diana begin to use sign language?

A.At the age of two

B.When she was born

C.Before she said her first word

D.When she was five months小题3:Diana understands the sign language well because __________.

A.she is old enough

B.she is clever

C.her grandmother teaches her

D.her mother communicates with her in it小题4:The officials asked Diana to give some lessons because they thought __________.

A.she had a big vocabulary

B.she started signing at about five months

C.she could read the story in sign language

D.she could teach the workers to communicate better with deaf customers.小题5:Which of the following is NOT true?

A.Diana’s mother is deaf.

B.The workers in the supermarket want to learn sign language.

C.Diana wants to be a teacher at the supermarket to make money.

D.Diana knows much about sign language when she is two years old.

题型:单项选择题

硅整流二极管的正极接电源的()极,负极接电源的()极,二极管应导通。

A.正,负

B.负,正

C.正,正

D.负,负

题型:单项选择题

高温时空气中的N2和O2会反应生成NO而污染大气:N2(g) +O2(g)=2NO(g)。试通过计算说明在1 200℃ 的条件下,此反应能否正向自发进行?估算此反应自发进行的最低温度是多少?

已知:该反应的△H= +180.50kJ·mol-1: △S= +24.77J·mol-1·K-1

题型:单项选择题

采用分项结转分步法计算产品成本时,能直接提供按原始成本项目反映的产品成本构成,不需要进行成本还原。

题型:单项选择题

粮豆的主要卫生问题是霉菌和毒素的污染、农药残留以及()。

A.微生物的污染

B.重金属和仓储害虫的污染

C.环境条件

D.理化因素

E.人为污染

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