单相半波整流输出平均电压为变压器次级电压有效值的（）倍。 A.0.9 B.0.45

某企业的一项新产品开发计划，经主管机关审查批准后，该文件应作为（）.

A、科技资料

B、文书档案

C、该产品研究试制档案

D、科技文献

From Monday until Friday most people are busy working or studying, but in the evenings and on weekends they are free to relax (放松) and enjoy themselves. Some watch TV or go to the movies; others take part in sports. It depends on individual interests. There are many different ways to spend our spare time.

Almost everyone has some kinds of hobbies. It may be anything from collecting stamps to making model airplanes. Some hobbies are very expensive, but others don’t cost anything at all. Some collections are worth a lot of money; others are valuable only to their owners.

I know a man who has a coin collection worth several thousand dollars. A short time ago he bought a rare (稀有的) fifty-cent piece worth $250! He was very happy about his buying and thought the price was reasonable (合理的). On the other hand, my youngest brother collects matchboxes. He has almost 600 of them but I doubt (怀疑) if they are worth any money. However, to my brother they are very valuable. Nothing makes him happier than to find a new matchbox for his collection.

That’s what a hobby means, I guess. It is something we like to do in our spare time simply for the fun of it. The value in dollars is not important, but the pleasure it gives us is.

小题1:The underlined word “individual” in the first paragraph most probably means____ .

A．different

B．strange

C．secret

D．one's own小题2:In the writer's opinion, ____.

A．all hobbies are very expensive

B．some hobbies don't cost anything

C．hobbies are worthless

D．hobbies are valuable to everybody小题3:Something that one enjoys doing in one's spare time is a____ .

A．job

B．pleasure

C．hobby

D．habit

“54321”安全生产体系中的安全制度推进重点之一是（）。

A、落实安全制度执行与责任考核，严格责任追究

B、落实责任追究

C、落实安全责任考核

D、落实安全制度执行

下列有关融资租赁的论述中，正确的是( )。

A．当售后回租形成融资租赁时，售后回租的损失应在租期内平均分摊，以调整各期的折旧费用

B．只有当最低租赁付款额的折现值大于租赁资产原账面价值的90%时，承租方才能将租赁定性为融资租赁

C．出租方的内含报酬率应使得最低租赁收款额的折现值恰好等于租赁资产原账面价值

D．在实际利率法下，每期分摊的“未确认融资费用”呈递减趋势

E．在实际利率法下，出租方的租赁投资净额呈递增趋势

人口社会变动