下列关于脑脊液病原体检查，哪项不正确A．化脓性脑膜炎采用革兰染色 B．病毒性脑膜炎采

每l00g草鱼中所含主要营养成分的平均质量为

成分	糖类	蛋白质	油脂	水	维生素	钙	铁	锌
质量/g	0	16.6	5.2	78.2	0.00004	0.038	0.0008	0.0009

则该草鱼能提供人类生命活动必需的营养素有（　　）

A．六大类

B．五大类

C．四大娄

D．三大类

阅读理解。

     Many years before the United States was founded (建立), Americans had already invented barbecues.

But the first barbecues, in fact,were the invention of the Taine Indians of Haiti, who dried their meat on raised

frames (架子) of sticks over fires. Spanish explorers spelled the Taine word as barbecue, and as time passed,

English settlers along the Atlantic coast had their own barbecues.

     One summer day in 1773, Benjamin Lynda, a citizen of Massachusetts, wrote in his diary, "Fair and hot;

Browne; hack overset." That is, on a bright and hot day he went to the Brownes to attend a barbecue, and his

carriage (马车) fell over. It shows that the barbecue had its social occasion by that time. Large animals would

be roasted whole on frames over hot fires, and neighbors would be invited to dinner.

     In later centuries, as settlers moved to the west, the barbecue went along with it, reaching an especially

large size in Texas, where a pit (坑) for fuels (燃料) such as tree branches might be over ten feet deep. Today,

the barbecue grills (烧烤架) which are fueled by charcoal (木炭) or electricity are likely to be small and easy to

move, and can cook only parts of an animal at a time, but people still have barbecues out of doors and always

invite their neighbors or friends over.

1. Who invented the barbecues first in history?

A. American people.

B. Taine Indians.

C. Spanish explorers.

D. English settlers.

2. The second paragraph mainly tells us that the barbecue ___________.

A. is only held on a hot sunny day

B. welcomes people who keep diaries

C. is held both indoors and outdoors

D. has its social occasion for over 200 years

3. The underlined expression "social occasion" can be best translated into ___________.

A. 社交功能

B. 社会福利

C. 社会地位

D. 社会背景

4. The following are all the barbecue ways EXCEPT ___________.

A. drying meat on raised frames of sticks over fires

B. roasting a whole animal over a pit full of burning tree branches

C. cooking parts of animals over fires on grills fueled by charcoal

D. heating meat in the bright and hot daylight

甲生前租住3居室住房一套，另有存款5万元，股票若干。2001年甲因车祸死亡，保险公司因其在保险单中未填写受益人，将5万元保险金交给其儿子。甲的遗产包括：（）

A.住房

B.存款

C.股票

D.保险金

A公司未发行优先股，2004年每股利润为5元，每股发放股利为3元，留存收益在2004年度增加了640万元。2004年年底每股净资产为28元，负债总额为6200万元，问：A公司的资产负债率为多少？

钳工常用工具和设备用哪些？