圆角带是由于冲裁过程中刃口附近的材料()的结果。

题型:填空题

问题:

圆角带是由于冲裁过程中刃口附近的材料()的结果。

考点:机械工程冲压工艺与模具设计冲压工艺与模具设计题库
题型:填空题

采购人或集中采购机构应在中标或成交通知书发出之日起的一定时间内,按照采购文件确定的事项签订政府采购合同。这个期间是( )。

A.20天

B.45天

C.60天

D.30天

题型:填空题

在下列数字后面填一合适的单位或意义:

(1)一本初二物理书的质量是230 ________;

(2)一枚1元硬币重约0.06 _______;

(3)空气的密度是1.29_________;

(4)铁的密度是7.9 _________;

(5)水的比热容是4.2×103______________。

题型:填空题

完形填空(共20小题,每题1分,满分20分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

I got lots of interesting experiences in a free school. At first I couldn’t believe it. There were no    41    in rows or loud-sounding bells, nor did anyone have to go to    42   . Although we lived “in”,    43   made us go to bed at a certain time; there was no “ lights out”.

The    44  thing was that practically all the students went to class, and very few people stayed up late at night. Only the new people stayed up or    45  class. The new ones always went wild    46   , but his wildness never lasted long. The freedom took some getting used to. Our teachers treated us like  _47  ; never did we have to   48_   “ stand up”, “ sit down”, “ speak out”. I don’t    49    one student who didn’t try his best.

The subjects were the same as those in the ___50_____ school, but what a difference in the method! For example, in botany (植物学) we had   51__  classes in the spring or fall, but instead we planted two gardens, a vegetable garden and a flower garden. Then in winter we each studied a few    52  things about what we had grown. In math the students built three different sizes of storerooms---small ones   53   , but usable. They did this instead of having lessons in the classroom. They really had a    54  time, too, designing everything, drawing the blueprints(蓝图;设计图), figuring out the angles and so on. I didn’t take    55__ . But I could do the basic things with numbers. That’s   56   .

57_    I think I am a      58    person for having gone to the school. I can read and write as well as anyone else of my age, and I think better. That’s probably a real big      ___59     between the free school and the regular school--- the amount of   60   .

41.A.desks           B. lights         C. books            D. windows

42.A. home           B. bed           C. class             D. work

43.A. teachers         B. parents        C. nobody           D. somebody

44.A. sad             B. last          C. good             D. strange

45.A. attended         B. took          C. missed           D. studied

46.A. from then on     B. at first         C. once more        D. just then

47.A. workers         B. pupils         C. gardeners         D. grown- ups

48.A. play            B. say           C. study             D. understand

49.A. hear from        B. feel like       C. think about        D. know of

50.A. night           B. regular        C. small            D. real

51.A. all             B. short        C. no               D. indoor

52.A.wild            B. successful     C. interested        D. particular

53.A. as well         B. after a while  C. of course         D. as a result

54.A. funny          B. great         C. convenient        D. terrible

55.A. math          B. angle        C. botany           D. gardens

56.A. uninteresting    B. interesting     C. enough          D. dangerous

57.A.On the whole    B. Once again     C. Sooner or later     D. After a while

58.A. careful         B. better         C. busier            D. lovely

59.A. problem        B. chance        C. difference         D. change

60.A. reading         B. gardening     C. teaching         D. thinking

题型:填空题

边界协议书附图的内容应包括边界线、界桩点及相关的地形要素、名称、注记等,各要素应()表示。

A.系统

B.简要

C.详尽

D.突出

题型:填空题

目前常用的人造石材分为四种类型,人造大理石和人造花岗岩多属( )。

A.水泥型
B.聚酯型
C.复合型
D.烧结型

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