试题与答案

传动精度敲、工作平稳、无噪声、易于自锁、能传递较大的扭矩,这是()的特点。 A.螺旋

题型:单项选择题

题目:

传动精度敲、工作平稳、无噪声、易于自锁、能传递较大的扭矩,这是()的特点。

A.螺旋传动机构

B.蜗轮蜗杆传动机构

C.齿轮传动机构

D.带传动机构

答案:

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参考答案:(1)坚持中 * * 党的正确领导,坚持以经济建设为中心。(2)坚持民族平等、民族团结和各民族共同繁荣的基本原则,使社会主义新型民族关系不断得到巩固和发展。(3)坚持和完善人民代表大会制度和民族...

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题型:单项选择题

Low levels of literacy and numeracy have a damaging impact on almost every aspect of adults, according to a survey published yesterday, which offers (1) of a developing underclass. Tests and (2) with hundreds of people born in a week in 1958 graphically illustrated the (3) of educational underachievement. The effects can be seen in unemployment, family (4) , low incomes, depression and social inactivity.

Those who left school at 16 with poor basic skills had been employed for up to four years less than good readers (5) they reached 37. Professor John Bynner, of City University, who carried the research, said that today’s (6) teenagers would even encounter greater problems because the supply of (7) jobs had shrunk.

Almost one fifth of the 1,700 people interviewed for yesterday’s report had poor literacy and almost half (8) with innumeracy, a proportion (9) other surveys for the Basic Skills Agency. Some could not read a child’s book, and most found difficult (10) written instruction.

Poor readers were twice as likely to be a low wage and four times likely to live in a household where partners worked. Women in this (11) were five times as likely to be (12) depressed, (13) both tended to feel they had no control over their lives, and to trust others (14) .

Those who had low literacy and numeracy were seldom (15) in any community organization and less likely than others to (16) in a general election. There had been no (17) in the literary level of (18) reporting problems.

Alan Wells, the agency’s director, said: “ The results emphasize the dangers of developing an underclass people, who were out of work, (19) depressed and often labeled themselves as (20) . There is a circle of marginalization, with the dice against these people and their families.”

3()

A.defect

B.backwardness

C.handicap

D.scarcity

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