B细胞表面有SmIg、Fc受体等受体,其中Fc受体是鉴定B细胞最可靠的指标。()

题型:判断题

问题:

B细胞表面有SmIg、Fc受体等受体,其中Fc受体是鉴定B细胞最可靠的指标。()

考点:临床医学检验六、免疫细胞、细胞因子及粘附分子检测及应用六、免疫细胞、细胞因子及粘附分子检测及应用题库
题型:判断题

关于道德和法律,正确的说法是()。

A.道德比法律的威力小

B.法律比道德要多一些实用性

C.与法律相比,道德在表述上缺乏严谨性

D.道德比法律的适用范围广

题型:判断题

The round-the-clock availability that cell phones have brought to people’s lives may be taking a toll on family life, a new study suggests. The study, which followed more than 1300 adults over 2 years, found that those who consistently used a mobile phone through out the study period were more likely to report negative “spillover” between work and home life—and, in turn, less satisfaction with their family life.

Spillover(影响,后果) actually means that the line between work and home began to become unclear. Work life may invade home life—when a parent is taking job-related calls at home, for instance—or family issues may start to take up work time. For example, a child may call Mom at work, telling her “the microwave exploded”, explained Noelle Chesley, an assistant professor of society at the University of Wisconsin Milwaukee and the author of the study. The problem with cell phones seems to be they are allowing for ever more spillover between work and home.

This may be especially true for working women, the study found. Among men, consistent use of mobile phones seemed not to allow more work issues to creep(潜入) into family time. But for women,  the spillover tended to go in both directions—being “connected” means that work cuts into home time, and family issues come into work life.

Cell phones seem to be opening more lines for stressful exchange among family members. But there may be ways to control the spillover, according to Chesley. Employers, she said, should look at their policies on contacting employees after working hours to make sure their expectations are “reasonable”. For their part, employees can decide that cell phones go off during family time,  Chesley said.

小题1:Which of the following can replace the underlined phrase “taking a toll on” in Paragraph l?

A.Explaining

B.Protecting

C.Extending

D.Damaging小题2:The example “the microwave exploded” in Paragraph 2 is used to              .

A.show the microwave is of poor quality

B.indicate how dependent the child is

C.indicate family issues affect work hours

D.show work time creeps into family life小题3:What is the main idea of this passage?

A.Cell phones offer 24-hour availability.

B.Cell phones get life and work mixed.

C.Women don’t use cell phones in an effective way.

D.Men are better at dealing with family problems.小题4:What is the author’s attitude towards round-the-clock availability of the cell phone?

A.Curious

B.Positive

C.Subjective

D.Objective

题型:判断题

极性按由强到弱的顺序排列的是()

A.石油醚、二氯甲烷、氯仿、乙醚

B.二氯甲烷、丙酮、乙醚、石油醚

C.乙醇、丙酮、氯仿、石油醚

D.乙醇、氯仿、丙酮、石油醚

E.石油醚、乙醚、氯仿、苯

题型:判断题

急性炎症性脱髓鞘性多发性神经病()。

A.四肢近端无力,心电图示U波

B.四肢无力,脑脊液蛋白细胞分离

C.四肢近端无力,腓肠肌肥大

D.四肢近端无力,疼痛,压痛

E.四肢远端无力,远端感觉障碍

题型:判断题

对不同的原料和不同加工方案,分馏塔进料温度控制是不同的。

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