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问题 多项选择题

下列所描述的运动中，可能的是（）

A.速度变化很大，加速度很小

B.速度变化的方向为正，加速度方向为负

C.速度变化越来越快，加速度越来越小

D.速度越来越大，加速度越来越小

答案

参考答案：A, D

解析：速度变化很大，但时间不知道，所以加速度大小也不能确定．可能很小，也可能较大，A正确；加速度变化的方向与速度变化的方向相同，速度变化为正，加速度方向为正，B错误；速度变化越来越快，加速度只会越来越大，C错误，当物体做加速度减小的加速运动时，加速度减小，速度增大，D正确故选AD

问答题

某企业拥有长期资金500万元，其中长期借款200万元，资本成本8%，普通股300万元，资本成本13%。由于扩大经营规模的需要，拟筹集新资金。经分析，认为筹集新资金后仍应保持目前的资本结构，即长期借款占40%，普通股占60%，并测算出了随筹资的增加各种资本成本的变化。

资金种类 目标资本结构 新筹资额 资本成本
长期借款 40%

30万元以内

30万～80万元

80万元以上

8%

9%

10%

普通股 60%

60万元以上

60万元以上

14%

16%



要求：
1.计算各筹资突破点；
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单项选择题

Passage Four

Japan’s old imperial army never went into the field without a group of "comfort women" for the troops. Many male office workers in modern Japan (and in Japanese branches abroad) seem to think they are still at war. Women workers, even those with university degrees, are expected to do all the humble tasks: greet the visitors, make the tea, tidy up the office afterwards and then leave the firm as soon as they get married and have a child. Come party time, they are often pressed into behaving like bar hostesses.
The fort of Japanese male chauvinism—the old guard of the ruling Liberal Democratic Party—has unintentionally done more than most to change all that. The sex scandal that marked the brief prime ministership of Mr. Sosuke Uno last summer outraged many women, and helped the opposition to its success in the upper-house election in July. Mr. Uno is forgotten, but the resentment (怨恨) of women about their treatment at the hands of men lingers (逗留) on. Over the past few months Japanese women have started campaigning much more vigorously for laws to protect them from sexual bothering at work.
Japan’s first lawsuit claiming sexual bothering opened last week in a city court in Fukuoka. A 32-year-old woman, whose name has been kept from being known (another first), is seeking about $ 26 000 in damages from her former boss and the publishing company she worked for. She claims his sexual hints forced her to leave the company and give up her career. She stakes her claim on the ground, among others, that her rights under Article 14 of the Japanese Constitution were violated; this guarantees equal treatment for the sexes.
Women’s lobbying groups have been springing up all over Japan. The lead has been taken by lawyers at the Second Bar Association in Tokyo. Last month the association held a call-in for women to expose their grievances. Its telephone lines were jammed for six hours. By the end of the session, some 137 formal complaints had been registered. "Nearly 40% of them were from women who had been compelled to have sexual relations with their superiors at work," says Miss Shizuko Sugii, a lawyer with the bar association. Ten of the cases have since been classified as rape or attempted rape.

Women’s social position in Japan today is ______.

A．very low

B．comparatively high

C．high enough

D．as high as that of Japanese men
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