负债类账户的贷方登记（）。
A.减少额
B.增加额
C.增加或减少额
D.以上都不对
参考答案：B
解析：负债类账户的贷方登记增加额。
--- How _____ hours do you sleep a day?
--- Well, about eight hours. But how _____ sleep do we students really need?
A．many; many
B．much; much
C．much; many
D．many; much
影响药效学的相互作用包括（）
A.生理性拮抗
B.生理性协同
C.受体水平拮抗
D.干扰神经递质转运
E.相互影响排泄
