水与乙醇能形成()混合物,故用蒸馏法不能完全将乙醇中的水除去。 A.共沸 B.络合

题型:单项选择题

问题:

水与乙醇能形成()混合物,故用蒸馏法不能完全将乙醇中的水除去。

A.共沸

B.络合

C.化合

D.不溶

考点:高密度聚乙烯车间员工考试高密度聚乙烯车间员工考试题库
题型:单项选择题

当固体药物的含水量在下列哪些条件下时,可以填充胶囊

A.4%以下

B.9%以下

C.15%以下

D.7%以下

E.12%以下

题型:单项选择题

坐标增量是两点平面直角坐标之()。

A.和

B.差

C.积

D.比

题型:单项选择题

While drunken driving may be on the decline, traffic safety experts remain puzzled over how to deal with another alcoholrelated danger: drunken pedestrains.

Pedestrians struck and killed by cars often are extremely drunk. In fact, they are intoxicated more frequently-and with higher bloodalcohol levels-than drunken drivers who are killed in accidents, various studies have shown. Forty percent of adult pedestrians involved in fatal crashes have a bloodalcohol level of at least 0.10-which by law in most states signifies intoxication-compared to only 25 percent of drivers in deadly accidents, according to recent federal data.

Some types of pedestrain accidents have been declining nationally, especially those involving children, but the number of adult pedestrians who are drunk when killed in traffic has remained relatively steady at 2500 a year. The total number of pedestrians killed annually in U.S. traffic accidents is at least 7000, or one of every seven highway accidents resulting in death.

“We’re dealing here, we think, with a very severe drinking problem that leads to a severe highway safety problem,” said Richard Blomberg, president of Dunlap and Associates Inc, in Norwalk, Coon.

Blomberg, whose consulting company found a very high rate of alcohol involvement in a controlled study of pedestrian accidents in New Orleans, was among several researchers who spoke on the topic at the annual meeting of the Research council’s Transportation Research Board(TRB)  in Washington in January.

Pedestrian accidents have not received enough attention in the past, according to Kay Colpitts, who chairs the board’s committee on pedestrians. Few methods exist to monitor walking habits, she said, and researchers have been mystified about how to prevent disasters.

5.Which of the following would be the best title for the passage?

A.Traffic Safety.                   B.Drunken Drivers.

C.Drunken Pedestrian Accidents.     D.A Severe Highway Safety problem.

6.Among the causes of walkers’ accidents, the most serious problem is .      

A.long delays in traffic signals that may make people cross streets without paying attention to traffic rules

B.alcohol

C.a lack of adult keeping eyes on many children involved in accidents

D.former drunken drivers whose licenses are not allowed to use for a time

7.According to recent federal data, drunken drivers with an over 0.10 bloodalcohol level in deadly accidents .      

A.are 15 percent less than drunken adult walkers with the same level

B.are 2500 a year

C.are at least 7000 in US traffic accidents

D.make up oneseventh of highway accidents

8.According to the passage, what is Blomberg?

A.A researcher.                        B.A specialist in traffic safety.

C.A clerk of a consulting company.        D.A government official

题型:单项选择题

器件散热常用的冷却方式有()。

A.自冷式

B.风冷式

C.液冷式

D.蒸发冷却式

题型:单项选择题

股份制是现代企业的一种( )。

A.生产组织形式
B.资本组织形式
C.利益协调方式
D.基本管理制度

更多题库