问题 多项选择题

常用的额定电压为交流500V及以下的绝缘导线有()。

A、橡皮绝缘线; 

B、塑料绝缘线; 

C、塑料护套线; 

D、绝缘软线; 

E、聚氯乙烯绝缘线; 

F、橡皮套和塑料套可移动软线。 

答案

参考答案:A, B, C, D, F

解答题
单项选择题

Some politicians are scurrying about with much zest and anticipation. It’s time, their polls inform them, to find the quick fix for what they have determined is a society plagued by the irregular heartbeat of deficient values.

But there are contradictions that intrude on this denunciatory atmosphere. If there are moral omissions in the society, they cannot be sealed by instant, slenderly based attacks on entertainment. The plain fain fact is we are rearranging our priorities in the wrong way.

We are today misplacing our energies and our funding by directing all sorts of incentives to high schools and colleges. Too late. The moral scaffolding has been built by then, for better or worse. How then to begin this revision of life conduct We must introduce in pre-school, and keep alive through grade five, a new school course.

The course could be titled, "What is right, and what is plainly wrong. " For 30 minutes each day, the teacher would illuminate for these very young children what William Faulkner labeled "the old verities", the words that construct and implement the daily moral grind in every durable society must engage if it is to be judged a "just" society.

These are words like duty, honor, service, integrity, pity, pride, compassion and sacrifice, plus the clear admonition that violence is wrong. To the teaching of the meaning of those words must be added that cleansing rule of treating other people as you would want them to treat you. And most of all to make sure that these kids understand with growing clarity that home, school and church are the sanctuaries for their later life.

There is a grand simplicity to this kind of school course. It enters a child’s mind early, burrowing deep into those recesses of the human brain that even today advanced medical science has not been able to penetrate.

If you ask enough people, you will find that most of us remember our first-or second-grade teacher. I remember Miss Corbett and Miss Walker, who read to us before we really understood, but the words had weight and allure. We listened and, without really knowing it, we learned and saved what we learned. Perhaps it was because what we heard in those early school years was the first entry into our learning vessel.

Absent this kind of early instruction, absent the building of this moral shield, no congressional law, no presidential executive order, no fiery rhetoric will salvage a child’s conduct nor locate a missing moral core.

The author insists that children be made aware that home, school and church ().

A. can protect them against moral fall

B. can give comfort whenever they are in trouble

C. are of great help for their career success

D. are free from child abuse