对脑血管具有较强扩张作用的钙拮抗药是 A.维拉帕米 B.硝苯地平 C.尼莫地平 D.

题型:单项选择题

问题:

对脑血管具有较强扩张作用的钙拮抗药是

A.维拉帕米
B.硝苯地平
C.尼莫地平
D.地尔硫
E.戈洛帕米

考点:口腔执业医师口腔执业医师
题型:单项选择题

丹麦生态学家C·Raukiaer选择生活型系统的基础是活动芽。( )

题型:单项选择题

假设有部门和职员两个实体,每个职员只能属于一个部门,一个部门可以有多名职员,则部门与职员实体之间的联系类型是( )联系。

A.m:n
B.1:m
C.m:k
D.1:1

题型:单项选择题

Most people would be (1) by the high quality of medicine (2) to most Americans. There is a lot of specialization, a great deal of (3) to the individual, a (4) amount of advanced technical equipment, and (5) effort not to make mistakes because of the financial risk which doctors and hospitals must (6) in the courts if they (7) things badly.

But the Americans are in a mess. The problem is the way in (8) health care is organized and (9) . (10) to pubic belief it is not just a free competition system. The private system has been joined a large public system, because private care was simply not (11) the less fortunate and the elderly.

But even with this huge public part of the system, (12) this year will eat up 84.5 billion dollars—more than 10 percent of the U. S. Budget—large number of Americans are left (13) . These include about half the 11 million unemployed and those who fail to meet the strict limits (14) income fixed by a government trying to make savings where it can.

The basic problem, however, is that there is no central control (15) the health system. There is no (16) to what doctors and hospitals charge for their services, other than what the public is able to pay. The number of doctors has shot up and prices have climbed. When faced with toothache, a sick child, or a heart attack, all the unfortunate persons concerned can do is (17) up. Two thirds of the population (18) covered by medical insurance. Doctors charge as much as they want (19) that the insurance company will pay the bill.

The rising cost of medicine in the U. S. A. is among the most worrying problems facing the country. In 1981 the country’s health bill climbed 15.9 percent--about twice as fast as prices (20) general.

15()

A.over

B.on

C.under

D.behind

题型:单项选择题

园林给水计算中,集中流量集中在计算管段的始、末端输出,称之为()

A、沿线流量

B、流量

C、节点流量

D、长度比流量

题型:单项选择题

某患者,女性,38岁。前来医院就诊,被诊断为子宫内膜炎,提示有厌氧菌感染。下列抗感染药物中,不具有抗厌氧菌活性的是()

A.青霉素

B.头霉素类

C.氨基糖苷类

D.林可霉素类

E.硝咪唑类

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