目前最常用的透析液种类是() A.乳酸盐透析液 B.磷酸盐透析液 C.醋酸盐透析液

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问题:

目前最常用的透析液种类是()

A.乳酸盐透析液

B.磷酸盐透析液

C.醋酸盐透析液

D.碳酸氢盐透析液

E.次氯酸根透析液

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下列关于空气的说法正确的是(  )

A.按照质量计算,空气中含有氮气约为78%,含有氧气约为21%

B.空气是一种十分重要的天然资源,我们应该重视对空气环境的保护

C.空气是成分固定不变的气体

D.空气被压缩时体积变小是化学变化

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辅助诊断斑疹伤寒的是().

A.外斐试验

B.肥达试验

C.冷凝集试验

D.Ascoli试验

E.抗"O"试验

题型:单项选择题

Part 1


·Read the following passages, eight sentences have been removed from the article.
·Choose.from the sentences A-H the one which fits each gap.
·For each gap (1-8) mark one letter (A-H) on the Answer Sheet.
·Do not mark any letter twice.
Today’s career assumptions are you can get a lot of development, challenge and job satisfaction and not necessarily be in a management role.
A new malady is running rampantly in corporate America: management phobi
  • a. (1)
    " I hated all the meetings," says a 10-year award-winning manager, "and I found the more you did for people who worked for you, the more they expected." (2)
    With technology changing in a wink, you can never slack off these days if you’re on the technical side. (3)
    In addition, the Dilbert factor is at work. With Scott Adams’s popular cartoon character— as well as many television sitcoms — routinely portraying managers as morons or enemies, they just don’t get much respect anymore.
    Supervising others was always a tough task, but in the past that stress was offset by hopes for career mobility and financial rewards. (4)
    But in today’s global, more competitive arena, a manager sits on an insecure perch. (5) There are far fewer rungs on the corporate ladder for managers to clim
  • b. In addition, managerial jobs demand more hours and headaches than ever before but offer slim, if any, financial paybacks and perks.
    Furthermore, managers now must supervise many people who are spread over different locations, even over different continents. (6)
    In an age of entrepreneurship, when the most praised people in business are those launching something new, management seems like an invisible, thankless role. (7)
    Management layoffs have done much to erode interest in managerial jobs, of course. (8) A. Many people don’t want to be a manager — and many people who are managers are, frankly, itching to jump off the management track — or have already.B. It’s a rare person who can manage to keep up on the technical side and handle a management job, too.C. Restructuring have eliminated layer after layer of management as companies came to view their organizations as collections of competencies rather than hierarchies.D. They must manage across functions with, say, design, finance, marketing and technical people reporting to them.E. I was a counselor, motivator, financial adviser and psychologist.F. Employers are looking for people who can do things, not for people who make other people do things.G. American Management Association surveys say three middle managers are laid off for every one being hired.H. Along with a sizable pay raise, people chosen as managers would begin a nearly automatic climb up the career ladder to lucrative executive perks: stock options, company cars, club memberships, plus the key to the executive washroom.

题型:单项选择题

属于脂溶性的维生素是

A.维生素K 

B.维生素C 

C.维生素B1 

D.维生素PP 

E.维生素B6

题型:单项选择题

对不可维修产品,从使用开始到发生故障的寿命平均值,称为平均故障间隔,记为MTBF()

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