切刀速度过高,会造成切片()。A、过大 B、过小 C、带尾巴 D、过扁

题型:单项选择题

问题:

切刀速度过高,会造成切片()。

A、过大

B、过小

C、带尾巴

D、过扁

考点:聚酯装置生产操作工高级聚酯装置生产操作工高级聚酯装置生产操作工题库
题型:单项选择题

男性患者,42岁,搬重物后出现腰痛伴右下肢疼痛3天,咳嗽、打喷嚏时疼痛加重,卧床休息时好转。查体:弯腰活动明显受限,第3~5腰椎棘突及右侧压痛,右侧直腿抬高40°(+),右小腿外侧痛觉减退,双侧跟腱反射和膝腱反射正常对称。

X线示L4~5椎间隙略窄。为了明确椎间盘病变的程度,做哪项检查最适宜()

A.腰椎CT

B.超声检查

C.肌电图检查

D.下肢血流图检查

E.下肢神经传导速度检查

题型:单项选择题

第二节完型填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项

Since 1983 when Jia Fuliang became the Young Pioneers’ advisor at a primary school in Dalian, Liaoning Province, she has   36   got herself ready for any difficulties.

Jia often says that   37   she is among the students she does not feel ill at all. One can’t   38   that she was a cancer   39  , who had an operation three years ago. Despite severe pain and illness, she keeps   40  with strong will. She gives   41  that she has to her beloved students with nothing   42  to herself.

Jia Fuliang is a   43   advisor at the Primary School for the Children of   44  and workers of Liaoning Rolling stock plant. She treats the students as kindly as   45  as her own children. If she   46   that someone gets very long hair, she will have the child’s hair   47  . If she knows that someone gets   48  , she will buy him or her something to eat   49  she will lose no time to appear in the student’s   50  when she is told that one student is ill.   

She often takes single-parent or   51  children out for a trip. On the other hand, Jia is very strict with the students. For example, she doesn’t   52   the little children to waste time or money. Nor will she allow them to use dirty words, or   53  traffic rules. Jia’s work and motherly love have   54  . In the past 14 years, the Young Pioneers have won one honour after another. Jia herself had been praised and give prizes many times.

Jia, now 43, looks forward to her life   55  with full confidence.

36.A.sometimes       B.often C.usually     D.always

37.A.once  B.until  C.before      D.if

38.A.discover   B.know C.believe     D.explain

39.A.doctor      B.nurse C.patient      D.researcher

40.A.training    B.studying   C.waiting     D.working

41.A.much       B.little  C.something D.all

42.A.given       B.left    C.taken D.held

43.A.strange     B.special      C.young       D.beautiful

44.A.staffs B.members   C.teachers    D.leaders

45.A.cruelly     B.kindly      C.differently       D.roughly

46.A.feels  B.imagines   C.doubts      D.notices

47.A.cuts   B.cutting      C.cut    D.to cut

48.A.thirsty      B.hungry     C.happy       D.sleepy

49.A.and   B.or     C.but    D.for

50.A.study B.bedroom   C.reading – room D.classroom

51.A.penniless  B.wealthy    C.homeless   D.sick

52.A.forbid      B.encourage C.inspire      D.allow

53.A.obey B.break C.follow      D.keep

54.A.paid off    B.paid for    C.paid back  D.paid down

55.A.alone B.behind      C.ahead       D.back

题型:单项选择题
如图所示,AB是一质量为m的均匀细直杆,A端靠在光滑的竖直墙壁上,B端置于水平地面上,杆身与竖直方向夹角为θ,杆与地面的摩擦系数为μ,保持平衡,则此时杆与地面的摩擦力为(  )

A.mgtgθ

B.mgsinθ

C.μmg

D.μmg

题型:单项选择题

案例:

在一堂初一男生跨栏跑教学课上,我组织了学生第一次跨栏。我先利用图片进行动作要领的讲解,并做模仿练习。无栏练习时,他们都做得很好,但是学生一到真正过栏就不行了,都是跑到栏前停下,不敢跨。只有少数胆大的学生能过,但都是跳过栏。在体育课中,我们经常碰到这种现象,如不敢做有点难度的单杠、双杠动作,不敢跳高、跳山羊、跳横箱等,导致正常教学难以继续进行。于是我让学生观看在课前各小组收集的跨栏跑优秀运动员的图片,并将技术动作展示在学生面前,然后讲解跨栏跑动作、比赛场面、优秀跨栏运动员的事迹等(从情感上获得学习跨栏跑的渴望,从感性上认识什么是跨栏跑)。再次练习时,我首先提出把栏放到最低以降低危险性,然后让学生开动脑筋,发挥自己的创造性,想一想还有什么方法更安全。同学们集思广益,想出了找替代物做栏架、用体操棒放在地上进行模仿练习,用橡皮筋两人两边拉直进行跨越练习等方法。但即使做了安全措施,同学们也还是不敢跨,因为没人带头来提高他们的自信心,增强他们的勇气。于是我就自己带头示范,并告诉他们“勇气不是说的,而是要体现给人看的”。我做了示范动作,效果不错。高个子的男生随后也跟着带头跨栏。就这样,有了第一个,就有第二个、第三个……

结合所学知识谈谈本案例的不足之处和可借鉴之处。

题型:单项选择题

零售商店、加油站在小批量付油和保管过程中发生的油品损失是()。

A、保管损耗

B、储存损耗

C、零售损耗

D、运输损耗

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