肝硬化病人引起肝肾综合征的因素中,下列哪项不正确() A.去甲肾上腺素分泌增加 B.

题型:单项选择题 A1型题

问题:

肝硬化病人引起肝肾综合征的因素中,下列哪项不正确()

A.去甲肾上腺素分泌增加

B.肾素-血管紧张素Ⅱ系统活性增强

C.肾前列腺素合成增加

D.血栓素A2增加

E.白三烯产生增加

考点:乡镇临床执业助理医师消化系统消化系统题库
题型:单项选择题 A1型题

怎样建立健全农村三级医疗卫生服务网络?

题型:单项选择题 A1型题

下列关于社区服务和社会实践的说法中错误的是______。

A.学生应尽可能多地走出教室
B.应细化学生在实践中可能遇到的学科问题
C.充分发挥学生的自主性
D.改变学生的学习方式

题型:单项选择题 A1型题



I am honored to be here today, (1) Harvard at this celebration of the College Board’s half century of working to promote (2) and equal opportunity in higher education.
Before I say anything else, I want to thank everyone in the room for the work you do every day to make college (3) , available, and (4) for millions of young people across the country.
I want to focus my remarks on a matter of (5) to American familiesand to the future of the nation -- restoring education to its proper role as a (6) to equal opportunity and (7) in our society.
This has been an (8) in higher education, with great and creative efforts made by many institutions. Earlier this year, we announced a new (9) at Harvard aimed at the students from families of low and (10) income. Under our new program, families with incomes of (11) will no longer be expected to contribute to the cost of attending Harvard for their children. Families with incomes of less than $ 60,000 will also see their (12) reduced.
We are proud of this effort at Harvard, but we are aware that the programs of individual institutions with means can never be a substitute for our shared (13) to provide adequate funding for Pell grants and other financial aid, and for the state and community college systems that make higher education (14) and affordable for the (15) .
There is something empty about (16) initiatives that may be right for one institution without attention to their broader impact. (17) , we (18) if we urge changes in national policy without doing what we can on our own campuses.
In this spirit, I want to (19) today a problem that is emerging with (20) in this nation.

题型:单项选择题 A1型题

在回转炉床上焦的煅烧是由热传递控制的:产率和最终产品的温度主要要取决于炉温,焦的()、焦的湿度、焦床的厚度、煅烧炉内的几何形状。

题型:单项选择题 A1型题

吸收式制冷在发生器内加热两种溶液是在()条件下进行的。

A.高温、低压

B.低压、低温

C.高温、高压

D.等温、等压

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