杠杆式安全阀可分为()。A、封闭式和不封闭式 B、全启式和微启式 C、角形和非角形

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问题:

杠杆式安全阀可分为()。

A、封闭式和不封闭式

B、全启式和微启式

C、角形和非角形

D、单杠杆式和双杠杆式

考点:延迟焦化操作工考试初级延迟焦化操作工考试初级延迟焦化操作工考试题库
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银行起诉前申请财产保全被人民法院采纳后,应该在人民法院采取保全措施()天内正式起诉。

A.15

B.10

C.5

D.30

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当持力层较厚且施工条件许可时,桩端全断面进入持力层的深度宜达到土层的临界深度,粘性土、粉土的临界深度一般为()

A.(2-6)D

B.(3-10)D

C.(1-2)D

D.(0.5-1.5)D

题型:单项选择题

常用的推销人员绩效考核指标有()。

A.销售量与毛利

B.访问率和访问成功率

C.销售费用及费用率

D.订单数目

E.新客户数目

题型:单项选择题

Windows98所支持的文件系统不包括()。

A.FAT16

B.FAT32

C.CDFS

D.DTFS

题型:单项选择题

The effect of the baby boom on the schools helped to make possible a shift in thinking about the role of public education in the 1920’s. In the 1920’s, but especially (1) the Depression of the 1930’s, the United States experienced a (2) birth rate. Then with the prosperity (3) on by the Second World War and the economic boom that followed it, young people married and (4) households earlier and began to (5) larger families than had their (6) during the Depression. Birth rates rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955. (7) economics was probably the most important (8) , it is not the only explanation for the baby boom. The increased value placed (9) the idea of the family also helps to (10) this rise in birth rates. The baby boomers began streaming (11) the first grade by the mid-1940’s and became a (12) by 1950. The public school system suddenly found itself (13) The wartime economy meant that few new schools were buih between 1940 and 1945. (14) , large numbers of teachers left their profession during that period for better-paying jobs elsewhere.

(15) , in the 1950’s, the baby boom hit an antiquated and inadequate school system. Consequently, the custodial rhetoric of the 1930’s no longer made (16) ; keeping youths ages sixteen and older out of the labor market by keeping them in school could no longer be a high (17) for an institution unable to find space and staff to teach younger children. With the baby boom, the focus of educators (18) turned toward the lower grades and back to basic academic skills and (19) . The system no longer had much (20) in offering nontraditional, new, and extra services to older youths.

9()

A.at

B.on

C.for

D.with

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