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【多选题】
直接作用于胆碱受体的拟胆碱药是A.
乙酰胆碱
B.
毒扁豆碱
C.
琥珀胆碱
D.
香碱
E.
筒箭毒碱
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】A unique selling proposition is a feature of a product that ______.
A.
attracts consumers in the market
B.
is highlighted in advertisements
C.
satisfies customer needs
D.
makes it different from other similar products
【简答题】在正弦交流电中，周期越长.频率越低，交流电变化越慢。
【单选题】What is an unique feature of horticulture ? _____________
A.
esthetic use of plants
B.
food use of plants
C.
medical use of plants
D.
forest use of plants
【简答题】The Air Waybill is the most important document in air cargo transportation．It serves as（ ）．
【简答题】What is the unique feature of Chinese food?
【多选题】The Air Waybill is the most important document for a batch of air cargo transportation. It serves as( )．
A.
receipt and delivery of shipment
B.
evidence of contract of air cargo transportation
C.
customs declaration
D.
document of title
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