导体对电流的______作用叫做电阻,单位是______,它的符号是______

题型:填空题

问题:

导体对电流的______作用叫做电阻,单位是______,它的符号是______.

考点:电阻的定义
题型:填空题

下列关于二度Ⅰ型房室传导阻滞的描述不正确的是()

A.PR间期逐渐延长

B.可见QRS波群脱落

C.房室传导比例常为2:1~4:1

D.漏搏后的PR间期又趋缩短

E.病变多位于房室结或希氏束的近端

题型:填空题

某商业机构购买价格800万元,其中400万元由金融机构提供抵押贷款,余额400万元由投资者用现金支付。若该项投资的经营收入扣除运营费用和抵押贷款还本付息后的年净现金流量为28万元,则该项投资的税前现金回报率是()。

A.7%

B.70%

C.5%

D.3.5%

题型:填空题

Pretending to be happy can actually make you more miserable — especially if you’re a woman, according to a new study.

The research found that women suffered more than men when pretending to be happy. Psychologist Dr. Brent Scott, who led the study, said employers should take note because forcing workers to smile when dealing with the public can backfire. He said, “Smiling for the sake of smiling can lead to emotional exhaustion, and that’s bad for the organization.”

Dr. Scott said the research showed customer-service workers who “fake smile” throughout the day worsen their mood and then withdraw from work, so their productivity drops. He added, “Bosses may think that getting their staff to smile is good for the organization, but that’s not necessarily the case.” Dr. Scott, assistant professor of management at Michigan State University, analyzed a group of bus drivers during a two- week period.

The study is one of the first of its kind to examine emotional displays over a period of time and compare the different effect that has on men and women. His team examined the effects of surface acting — or fake smiling — compared to what was termed “deep acting”, or cultivating(培养) positive emotions by recalling pleasant memories.

Dr. Scott said, “Women are harmed more by surface acting, meaning their mood worsens even more than the men and they withdraw more from work. However, they are helped more by deep acting, which means their mood improves more.”

Although “deep acting” seems to improve mood in the short-term, Dr. Scott said it’s not a long-term solution to feeling unhappy.

He said, “You’re trying to cultivate positive emotions, but at the end of the day you may not feel like yourself anymore.”

小题1:What does the underlined word “backfire” in Paragraph 2 probably mean?

A.Have the opposite effect.

B.Lead to conflict.

C.Drive people mad.

D.Help a lot.小题2:What can we learn from the passage?

A.Surface acting is good for organizations.

B.Men benefit more from deep acting than women.

C.Fake smiling causes more harm to women than men.

D.Recalling good memories is a long-term solution to feeling down.小题3:The findings of the research might serve as a warning to _______.

A.employees

B.employers

C.researchers

D.customers.小题4: What would be the best title for the passage?

A.Solution to feeling unhappy

B.How to cultivate positive emotions

C.How to improve workers’ productivity

D.Fake smiling makes you miserable

题型:填空题

患者男性,35岁,车祸致伤后3h入院,入院时患者呈昏迷状,双侧瞳孔等大等圆,对光反应存在,痛刺激无睁眼,肢体呈屈曲反应。头颅CT示侧脑室少量出血,额叶白质内有散在挫伤灶,未见颅内血肿,中线结构居中,侧脑室和脑池形态基本正常。最可能的诊断是()

A.急性硬膜下血肿

B.脑室出血

C.脑挫裂伤

D.弥漫性轴索损伤

E.外伤性蛛网膜下腔出血

题型:填空题

申请设立期货公司,具有期货从业人员资格的人员不少于( )人。

A.10

B.15

C.20

D.30

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