25岁初产妇，妊娠39周，规律宫缩10小时，胎心142次／分，枕左后位。肛查宫口开大

下列符合通风与空调设备安装控制要求的是( )。

A．水膜除尘器的喷嘴应同向、等距离排列，喷嘴与水管连接要严密，保证液膜或液滴的完整、正常

B．洁净系统的风管、配件和部件，必须采用不易起尘、积尘以及便于清扫的材料制作

C．根据顶棚骨架布置图，对骨架进行安装，保证“平正方直”，使顶棚块材或高效过滤器能准确就位

D．空调器的框架和壁板应采取模具化生产，使得各部位的尺寸必须完全一致

E．对于暗装的照明灯具，必须对顶棚与灯具箱的接缝处进行密封处理

当x=2时，代数式ax³+bx+1的值为3，那么当x=﹣2时，代数式ax³+bx+1的值是[ ]

 A．1

B．﹣1

C．3

D．2

小雨家的燃气热水器就要“退休”了。他正在考虑换一个什么热水器，空气能热水器主要是采用能量转移的方式加热的，即是把空气中的能量转移到水中加热的，可实现全天候热水供应，而太阳能热水器采用的是光热转换原理，即是把太阳光能直接转化为热能给水加热，但是在阴雨天气和夜晚无法工作，通常的厂家会在太阳能热水器中增加电辅助加热。

（1）太阳能热水器在雨天启动电辅加热时，电加热管正常工作的电流是多少？

（2）空气能热水器一年需要交多少电费？

（3）小雨从经济方面做出了选择，你认为他选哪种热水器，请说明理由。

（4）小雨给热水器预留了一个一开五孔插座，如图，不需要加热时可以不必拔下插头而通过边上的开关切断电路，请将家庭电路、插座及其内部的结构正确连接好，要求开关控制整个插座。

表示化学毒物引起受试对象全部死亡所需要的最低剂量的是（）

A.LD₀

B.LD₀₁

C.LD₅₀

D.LD₁₀₀

E.NOAEL

The Supreme Court will hear arguments about the use of public money for the private schooling of children with special needs. It’s interesting to note what’s not at issue: namely, that when a public school system is unable to provide an appropriate education, it is obligated to pay the costs of private school. Too bad poor children don’t have that unshakable right; if they did, there would be no controversy about the District program that gives vouchers to low-income children to attend private schools.

The case to be heard by the court hinges on whether parents have to enroll a child with special needs in public school before the child can attend private school at public expense. Special-education advocates say students shouldn’t have to waste time before being placed in a setting that best suits their needs, while school boards worry about a ruling that could amount to an unfettered fight to private schooling at public expense. What strikes us about the emotionally charged debate is the acceptance by both sides that sometimes it is appropriate to use public money to pay for a child to go to a private school. So, why all the arguments about the approximately$14 million for a federally funded program that lets 1,700 D. C. students attend private schools instead of failing public schools

To hear critics of the D. C. Opportunity Scholarship Program tell it, the use of public money for private schooling is as unprecedented as it is undesirable. In addition to the billions of dollars spent annually on private school tuitions for students with disabilities, private schools get public money for books, technology and teacher training. As long as the money is seen as benefiting the child, it is considered a proper, even desirable, use of public dollars.

Don’t get us wrong. We’re not arguing for the unilateral right of parents to enroll their sons and daughters in any school they wish with the taxpayers picking up the bill. Abuse of special-education policies has contributed to increased costs that threaten to take needed money from general public education funds. Safeguards are needed. Public schools should be pressed to do a better job for students with disabilities and students without. But there are schools in Washington where statistics show that failure is almost guaranteed. If a school system can’t educate a child—whether because of acute special needs or its own historical failings—why should that child not have options for a " free appropriate public education "

What can be inferred from the arguments at the Supreme Court（）

A. Too much public money is put into the private schools for children with special needs

B. Public schools are of very poor education quality

C. People consider it is reasonable to use public money for certain students’ private schooling

D. People find it is amusing arguing about spending public money for private schooling