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【简答题】
(2010年4月)劳动定额在质量上的要求就是使定额水平＿＿＿＿＿＿。
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反馈参考答案：
举一反三
【判断题】The main vasoactive metabolites of coronary are adrenosine, lactate, and hypoxia.
A.
正确
B.
错误
【单选题】the structure of maintaining the high osmolarity in the renal medulla is
A.
vasa recta
B.
proximal tubule
C.
distal convuluted tubule
D.
Henle's loop
E.
collect duct
【单选题】What are the functions of secondary metabolites?
A.
Used to attract animals to pollinate the plant and to disperse its seeds
B.
Protecting the plant from herbivores such as insects
C.
Used to derive medicine
D.
All of the above
【简答题】How does the author explain the unidirectional flow of metabolites?
【单选题】the structure of maintaining the high osmolarity in the renal medulla is
A.
proximal tubule
B.
distal convuluted tubule
C.
Henle's loop
D.
vasa recta
E.
collect duct
【单选题】In the microcirculation, which of the following structures is mainly regulated by local metabolites?
A.
Arterioles
B.
Microvenous
C.
blood capillary
D.
Precapillary sphincter
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