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【简答题】
复叶可以分为类型（）；（）、羽状复叶、单身复叶四种主要类型。
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】dose calibrator
【单选题】应付账款账户用来核算企业因购买材料、商品和接受劳务等经营活动应支付的款项。该账户应按照( )设置明细账。
A.
材料规格。
B.
商品名称
C.
劳务种类。
D.
供应单位
【单选题】The dose measured beyond the practical range of a therapy electron beam is due to
A.
Very low-energy electrons
B.
The highest energy electrons in the spectrum
C.
Characteristic x-rays generated in tissue
D.
Bremsstranhlung
【单选题】In a log dose-response plot, drug efficacy is determined by the maximal height of the measured response on the effect axis, whereas drug potency is determined by
A.
the number of animals exhibiting an all-or-none response.
B.
the signal transduction pathway.
C.
the formula, including the affinity of the drug and the number of drug receptors.
D.
the position of the curve along the log-dose axis.
【单选题】Everyone dose something for ______ purpose; there is no such ______ person who dose things for nothing in the world. [ ]
A.
a; a
B.
a;/
C.
the; a
D.
the; /
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