生物多样性是人类生存和发展的基本条件之一,如果没有生物多样性,人类难以感受到树林

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问题:

生物多样性是人类生存和发展的基本条件之一,如果没有生物多样性,人类难以感受到树林的绿意,还可能失去氧气、食物和水.保护生物多样性的根本目的是为了保护(  )

A.基因的多样性

B.生活方式的多样性

C.生物种类的多样性

D.生态系统的多样性

考点:保护生物的多样性
题型:选择题

简述干性油?

题型:选择题

以下说法正确的是( )

A.有限责任公司可以变更为股份有限公司,股份有限公司不能变更为有限责任公司

B.有限责任公司变更为股份有限公司时,折合的实收股本总额应等于公司净资产额

C.有限责任公司变更为股份有限公司的,公司变更前的债权债务由变更后的公司承继

D.有限责任公司变更为股份有限公司的,应当有5人以上的发起人,国有企业改建为股份有限公司的,发起人可以少于5人,但应当采取募集设立方式

题型:选择题

---Have you seen that huge new building going up near the market?

---Yes. I can’t ________ what it’s going to be. Not an apartment? Not a hotel?

A.hand out

B.take out

C.figure out

D.give out

题型:选择题



Americans have four primary avenues for making friends: at work, at school, through a hobby or a (1) such as volunteer work and discussion group, or through a family or (2) .
In American culture, a job is more than the work that one performs between the hours of 9 a.m. and (3) . Work becomes a major socializing influence. Many young mothers who (4) their jobs to care for small children remark on the loneliness of their new lifestyles because they have lost their forum for (5) .
A great number of American employers recognize business social (6) and use it to build a family atmosphere on the job so that employees will feel (7) in their work environment. Some employers arrange company get-togethers in their home or at a (8) . American companies have at least one (9) annually, usually at Christmas time. Many corporations have (10) where employees and administrators alike dress (11) to play games such as baseball and volleyball.
Top American administrators often hold social gatherings (12) . Depending upon the size of the employer’s home and the number of (13) . These social gatherings may be picnics, pool parties, or (14) . If the company is large, an employer may hold what Americans call (15) . For an open house, the employer will invite his employees to come to his home (16) between 1 p.m. on a certain day. Those invited usually stay for (17) , chatting with the other guests and their host. People come and go (18) during the designated hours, and the host keeps refreshments, usually (19) or hors d’oeuvres and beverages, available for all who come. For such social gatherings, it is considered (20) the invitation unless you have an excellent reason.

题型:选择题

电动机一相断路应采取()。

A、继续运行

B、观察情况

C、停机检查

D、边运行边检查

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