化简比并求比值：17：149；36分：1小时；0.48：0.12；0.25吨：2

根据短文内容，从下面所给的A—F选项中选出能概括每一段(61-65)主题的最佳选项。选项中有一项为多余项。

A. Attach more aid to weak schools.

B. Children should share the same educational rights.

C. Heavy load is supposed to be taken off the students’ shoulders.

D. Bring the industrial management of education to an end.

E. Balanced education may stop school choice.

F. Key schools and classes are unreasonable.

小题1:Education should be intended to make better citizens instead of making money. Money can be earned by starting business. It’s time to abolish the industrialized education so that all the people can benefit from real education.

小题2:Concrete measures should be taken to lessen the students’ heavy burden. Not empty talks but concrete and solid policies can guarantee all the students grow soundly.

小题3:My parents are farmer-turned workers. I think we should be treated equally with the local children. We should have equal chance to go to both the local public schools and take the national college entrance exam rather than go back to our native places. 

小题4:School choice has become a serious educational problem. To solve this problem, we must stick to the balanced development. The government should offer more support to weak schools and have all the teachers exchange the round hillock work among all the schools.

小题5:The government’s unwillingness to spend enough money on education makes key schools turn to parents for money to build new buildings and increase teachers’ income, widening the gap between key schools and common schools. Therefore, in order to realize the balance of education, the government should offer more help to weak schools.

毛 * * 在《沁园春·长沙》中写下了这样优美的诗句：“鹰击长空，鱼翔浅底，万类霜天竞自由。”该诗句展现了[ ]

A．生物的多样性

B．生物的适应性

C．生物的遗传和变异

D．生物的进化规律

传输控制（TCP）协议和用户数据报（UDP）协议是互联网传输层的主要协议。下面关于TCP和UDP的说法中，（）是不正确的。

A.TCP是面向连接的协议，UDP协议是无连接的协议

B.TCP能够保证数据包到达目的地不错序，UDP不保证数据包传输的正确顺序

C.TCP协议传输数据包的速度一般比UDP协议传输速度快

D.TCP保证数据包传输的正确性，UDP在传输过程中可能存在丢包现象

（）导致整列无标签并且机车轴距不全。

A.开机磁钢损坏或脱落

B.RF故障

C.天线接头进水

D.同轴电缆接头进水

造成加热炉燃烧不完全的原因有（）。

A.雾化蒸汽量大

B.雾化蒸汽压力过低

C.“三门一板”操作不好

D.燃料油粘度大，雾化不好