HXD3电力机车当总风压力降至()以下时,靠近操纵端侧压缩机开始工作。A、750kP

题型:单项选择题

问题:

HXD3电力机车当总风压力降至()以下时,靠近操纵端侧压缩机开始工作。

A、750kPa

B、820kPa

C、860kPa

D、880kPa

考点:电力机车司机考试电力机车司机技师考试电力机车司机技师考试题库
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注射青霉素后,因过敏引起的过敏性休克是( )。

A.副作用
B.后遗效应
C.应激效应
D.毒性反应
E.变态反应

题型:单项选择题

碎胶机操作中容易出现的问题有()。

A、电机反转

B、碎胶机报轴

C、烧电机

D、胶粒相连

题型:单项选择题

I don’t want to talk about being a woman scientist again. There was a time in my life when people asked constantly for stories about what it’s like to work in a field dominated (controlled) by men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the origin of the universe, the shape of space, time and the nature of black holes.

At 19, when I began studying astrophysics(天体物理学), it did not bother me in the least to be the only woman in the classroom. But while earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me. My every achievement—jobs, research papers, awards—was viewed through the lens (镜片) of gender (性别) politics. So were my failures. Sometimes, when I was pushed into an argument on left brain versus (相对于) right brain, or nature versus nurture (培育), I would instantly fight fiercely on my behalf and all womankind.

Then one day a few years ago, out of my mouth came a sentence that would eventually become my reply to any and all provocations (挑衅) : I don’t talk about that anymore. It took me 10 years to get back the confidence I had at 19 and to realize that I didn’t want to deal with gender issues. Why should curing sexism be yet another terrible burden on every female scientist? After all, I don’t study sociology or political theory.

Today I research and teach at Barnard, a women’s college in New York City. Recently, someone asked me how many of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer, 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don’t dismiss those concerns. Still, I don’t tell them “war” stories. Instead, I have given them this: the visual of their physics professor heavily pregnant doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that’s a sight worth talking about.

小题1:Why doesn’t the author want to talk about being a woman scientist again?

A.She is fed up with the issue of gender discrimination (歧视). 

B.She feels unhappy working in male-dominated fields.

C.She is not good at telling stories of the kind.

D.She finds space research more important.小题2:From Paragraph 2, we can infer that people would attribute (把…归因于) the author’s failures to ________.

A.the burden she bears in a male-dominated society

B.her involvement in gender politics

C.her over-confidence as a female astrophysicist

D.the very fact that she is a woman小题3:What did the author constantly fight against while doing her Ph.D. and post-doctoral research?

A. Lack of confidence in succeeding in space science.

B. Unfair accusations from both inside and outside her circle.

C. People’s fixed attitude toward female scientists.

D. Widespread misconceptions about nature and nurtured.

小题4:What does the image the author presents to her students suggest?

A.Women students needn’t have the concerns of her generation.

B.Women can balance a career in science and having a family.

C.Women have more barriers on their way to academic success.

D.Women now have fewer problems pursuing a science career.

题型:单项选择题

患儿10岁,女孩,上颌乳牙脱落一年未见恒牙萌出,赴医院就诊。母亲告知医生,患儿自小长牙较晚,近4岁乳牙才完全萌出,上颌乳牙脱落后数月未见萌出为重视,至今一年余仍未见牙齿萌出。患儿性格腼腆不愿说话,喜食奶糖。检查:右下Ⅴ残根,左下ⅤⅢ°松动,左上6(牙合)面龋,探诊敏感,温度测试一过性疼痛,左上ⅤⅢ°松动,叩痛(+)。口腔卫生良好,上前牙牙龈增生,探诊不易出血。

导致牙齿萌出异常的原因可能为()

A.龋病影响

B.右下Ⅴ残根

C.牙龈角化增生

D.性格腼腆

E.乳牙早失

题型:单项选择题

不同临床情况可出现哪些性质的渗出液?

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