多次观测覆盖系统的简易表示方法:600-50-0-50-600的“50”所表示的意义

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问题:

多次观测覆盖系统的简易表示方法:600-50-0-50-600的“50”所表示的意义是()。

A.激发点

B.偏移距

C.最大炮检距

D.排列长度

考点:石油地震勘探工石油地震勘探工中级石油地震勘探工中级题库
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进程由运行到阻塞是由于正在运行的进程的时间片用完而引起的。( )

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第二节:完形填空(共20小题,每小题1.5分,满分30分)

School children are now constantly asked by their parents and teachers to study harder and harder. And the competition 36    the students themselves is growing in most schools in China. In my opinion, the fierce(激烈的)  37  in school    38  more harm than good.

  Visiting a German city, I was   39  to be present at a parent-teacher meeting at a school.   40 were told at the meeting that their children's school grades were held to be a personal information   41  by the law, and that the school would not disclose(透露)the students' marks,  42  would the school report them to the parents. It is their view that a   43  school should encourage children to learn  44 without pressure. A student's intelligence(智力)and ability will be  45  later by competition in society.

  In China, ranking students according to their examination has been   46  as a means of encouraging students to study harder.

  A friend told me about a parent-teacher meeting she  47  with her daughter who was in the second grade.

  At the meeting, a teacher read aloud   48  students in the class and their marks for different   49 . Good students came at the top of the list and poor   50   at the bottom. And in front of everybody at the meeting, the teacher gave warning   51  those poor students and their parents.

  From this comparison, I   52  that teachers and school leaders in China ought to learn   53  more about children's psychology(心理学)and show their students more   54  . Such competition among students is unhealthy and should not be  55 .

36.A.over         B.between           C.among                 D.beyond

37.A.pain         B.competition      C.study                   D.argument

38.A.makes      B. gives              C.lets                 D.does

39.A.forced      B.required       C.ordered                 D.invited

40.A.Parents     B.Children      C.Teachers                 D.Students

41.A.forbidden        B.permitted     C.allowed                     D.protected

42.A.so        B.such              C.nor                   D.or

43.A.successful B.well-known      C.excellent                 D.ordinary

44.A.happily     B.lazily               C.inactively               D.friendly

45.A.judged      B.decided        C.developed         D.trained      

46.A.stopped    B.used            C.controlled              D.improved

47.A.went        B.joined            C.attended               D.present

48.A.a lot         B.a list of            C  the number of           D.the mark of

49.A.subjects    B.classes             C.schools                D.parents

50.A.these        B.those            C.one                    D.ones

51.A.from        B.to                 C.with                       D.off

52.A.conclude   B.guess             C.want                D.wonder

53.A.a little             B.a few             C.a bit of                 D.a quantity of

54.A.marks       B.homework       C.books                D.respect

55.A.discussed  B.removed          C.lasted              D.encouraged

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如图是a、b、c三种固体物质的溶解度曲线.下列说法中正确的是(  )

A.a的溶解度大于c的溶解度

B.在tl℃时,a、c两种饱和溶液中溶质的质量分数相同

C.c的不饱和溶液由t2℃降温至t1℃时,变成饱和溶液

D.要从b溶液中得到b,通常可采用蒸发溶剂结晶的方法

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贫血症状的有无,主要与下列哪些因素有关:()

A.人体的代偿能力

B.贫血产生的速度

C.贫血的程度

D.性别

E.患者的年龄

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首次提出生物-心理-社会医学模式的科学家是()。

A培根

B希波克拉底

C恩格尔

D魏尔啸

E笛卡尔

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