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问题 单项选择题

24小时咯血量超过多少为大咯血（）

A.50ml

B.100ml

C.200ml

D.300ml

E.500ml

答案

参考答案：E

解析：咯血是指喉及其以下呼吸道或肺组织出血，经口腔咳出。一般认为，24小时内咯血量少于100ml为少量咯血，100～500ml为中量咯血，24小时咯血量大于500ml或一次咯血量大于100ml为大量咯血。

单项选择题

A narrowing of your work interests is implied in almost any transition from a study environment to managerial or professional work. In the humanities and social sciences you will at best reuse only a fraction of the material (1) in three or four years’ study. In most career paths academic knowledge only (2) a background to much more applied decision-making. Even with a " training " form of degree, (3) a few of the procedures or methods (4) in your studies are likely to be continuously relevant in your work. Partly this (5) the greater specialization of most work tasks compared (6) studying. Many graduates are not (7) with the variety involved in (8) from degree study in at least four or five subjects a year to very standardized job (9) . Academic work values (10) inventiveness, originality, and the cultivation of self-realization and self-development. Emphasis is placed (11) generating new ideas and knowledge, assembling (12) information to make a " rational " decision, appreciating basic (13) and theories, and getting involved in fundamental controversies and debates. The humanistic values of higher (14) encourages the feeling of being (15) in a process with a self-developmental rhythm. (16) , even if your employers pursue enlightened personnel development (17) and invest heavily in " human capital " —for example, by rotating graduate trainees to (18) their work experiences—you are still likely to notice and feel (19) about some major restrictions of your (20) and activities compared with a study environment.

8（）

A.transferring

B.transmitting

C.translating

D.transporting
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单项选择题

通过结合方式传递的是

A．细菌染色体

B．细菌蛋白质

C．质粒

D．毒性噬菌体

E．温和噬菌体
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