自然保护区的功能有:( ) ①天然基因库 ②天然实验室 ③活的自然博物馆 ④天然

题型:选择题

问题:

自然保护区的功能有:(    )

①天然基因库 ②天然实验室 ③活的自然博物馆 ④天然休闲场 ⑤天然狩猎场

A.①②③

B.②③④

C.③④⑤

D.①②③④⑤

考点:保护生物的多样性生物多样性的内涵生物多样性面临的威胁及其原因
题型:选择题
阅读下面短文,把A-D四个句子填入文中空缺处,使短文内容完整、正确,然后完成第5小题。
    Many people have to work on the weekend. Some people do not mind. Other people think it is terrible.
    One man thinks that working on the weekend can be dangerous. He is Graham Coates. 1_____
    On Saturday, May 24, 1986, he went to the office to do some work. When he got in the elevator to go
home, it stopped between floors. Mr. Coates could not get out of the elevator. He was trapped (困住了)!
2_____ Then Mr. Coates remembered that it was a holiday in England. No one was going to come to work
until Tuesday!
     There was nothing for Mr. Coates to do. He had to wait until one of his coworkers came to work and
found him. 3_____ Early on Tuesday morning, the vice president of the company came to work and found
the elevator was not working. When the elevator was opened, Mr. Coates came out cold, weak, and tired.
4_____
    Now Mr. Coates says,"I only use elevators if they have telephones in them."
A. He started to shout, but no one heard him.
B. He had been in the elevator for sixty-two hours!
C. Mr. Coates worked in an office in Brighton, England.
D. With nothing to eat or drink, Mr. Coates ended up sleeping for most of the time.
5. What is the best title for this story?
A. A Busy Weekend
B. An Interesting Elevator
C. Elevator Safety
D. Trapped in an Elevator
题型:选择题

下列哪项是与天平灵敏性有关的因素()。

A.玛瑙刀口的锋利度与光洁度

B.天平梁质量

C.平衡调节螺丝的位置

D.天平零点的位置

E.天平的总重量

题型:选择题

柴油酸度不合格的原因有哪些?

题型:选择题

在麻醉过程中病人出现了晕厥,以下处理措施哪项是不正确的

A.立即停止注射
B.置病人于头低位,松解颈部衣扣
C.嗅闻氨水
D.吸氧
E.静脉注射肾上腺素

题型:选择题

王某于2010年4月1日应聘到某施工单位,双方于2010年4月15日签订了为期3年的劳动合同,其中约定试用期3个月,次日合同开始履行。2010年7月18日,王某拟解除劳动合同,则( )。

A.必须取得用人单位同意

B.口头通知用人单位即可

C.应提前30日以书面形式通知用人单位

D.应报请劳动行政主管部门同意后以书面形式通知用人单位

更多题库