新从病人分离的肠道杆菌均有()。 A.O抗原 B.H抗原 C.K抗原 D.以上都对

题型:单项选择题 A1/A2型题

问题:

新从病人分离的肠道杆菌均有()。

A.O抗原

B.H抗原

C.K抗原

D.以上都对

E.以上都不对

考点:微生物检验技术(师)环境卫生微生物检验环境卫生微生物检验题库
题型:单项选择题 A1/A2型题

枪筒内的子弹在某一时刻的速度是100m/s,经过0.0015s速度增加到700m/s,求子弹的加速度。

题型:单项选择题 A1/A2型题

根据目标一一路径理论,如果下属的工作是结构化的,可以带来高绩效和高满意度的领导是()。

A.指导式领导

B.支持型领导

C.参与式领导

D.成就导向式领导

题型:单项选择题 A1/A2型题

牛肉膏汤是常用的培养基,它的特点是( )

A.可培养需求较高的细菌
B.可作有糖基的培养基
C.可作无糖基的培养基
D.培养要求苛刻的细菌
E.可培养难以生长的细菌

题型:单项选择题 A1/A2型题

植物病害

题型:单项选择题 A1/A2型题

Without proper planning, tourism can cause problems. For example, (21) many tourists can (22) public places that are also enjoyed (23) the inhabitants(居住者) of a country: If tourists (24) too much traffic, the inhabitants become annoyed and (25) . They begin to dislike tourists and to (26) them impolitely. They (27) how much tourism can help the country’s economy. It is important to (28) about the people of a tourist attraction and how tourism affects it. Tourism should help a country (29) the customs and beauty that attract tourists.

Too much tourism can be a problem. If tourism (30) too quickly, people must leave other jobs to work in the tourism industry. This (31) that other parts of the country’s economy can suffer.

On the other hand, if there is not enough tourism, people can (32) jobs. Business can also lose money. It (33) a great deal of money to build large hotels, airports, air terminal, first class roads, and other support facilities(设施) (34) by tourist attractions. For example, a major international-class tourism (35) can cost as much as 50 thousand dollars per room to build. If this room is not used most of the time, the owners of the hotel lose money

32()

A.find

B.have

C.hate

D.lose

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