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【单选题】
患者男性,有慢性肾炎史8年,近日出现厌食、恶心呕吐、尿少、失眠,呼吸深而稍快,血压2.13/13.3kPa(160/100mmHg ),应首先考虑A.
心力衰竭
B.
呼吸衰竭
C.
慢性肾衰竭
D.
急性肝炎
E.
高血压脑病
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举一反三
【单选题】An English exchange student in your college is learning Chinese, but he often uses 你好 when he speaks to your professors. What do you think or say?
A.
Isn’t he funny when he makes silly mistakes?
B.
I wonder if he knows the professors really well.
C.
“It’s very rude to use 你好 when you speak to a professor. You should show more respect.”
D.
“Your Chinese is excellent. By the way, you might like to say 您好 when you speak to your professors.”
【多选题】大肠杆菌作为受体菌表达真核生物外源基因时具有的劣势是
A.
缺乏真核RNA加工剪辑所需要的酶系统
B.
不能对真核生物蛋白质进行修饰加工。
C.
生产所有的真核生物蛋白质均无活性
D.
以上都不对
【简答题】密度法测定的聚合物材料的结晶度和使用热焓法测定的结晶度,哪个方法所测得的值更高? 为什么?
【单选题】For the following introduction of a narrative essay, what kind of hook is used?A professor is a university teacher of the highest grade who holds a chair in a subject. I would like to share with your ...
A.
A relevant quotation.
B.
Question.
C.
Definition.
D.
Fact.
【简答题】Your parents and professors will be impressed. Therefore, the library can become your __, the place to do whatever you like.
【单选题】4 An English exchange student in your college is learning Chinese, but he often uses 你好 when he speaks to your professors. What do you think or say?
A.
Isn't he funny when he makes silly mistakes?
B.
I wonder if he knows the professors really well.
C.
"It's very rude to use 你好 when you speak to a professor. You should show more respect."
D.
Your Chinese is excellent. By the way, you might like to say您好when you speak to your professors."
【多选题】大肠杆菌作为受体菌表达真核生物外源基因时具有的劣势是
A.
缺乏真核RNA加工剪辑所需要的酶系统
B.
不能对真核生物蛋白质进行修饰加工。
C.
生产所有的真核生物蛋白质均无活性
D.
其余 都不对
【简答题】为什么真核生物基因不能在大肠杆菌中直接表达?在什么条件下才能表达?
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