单项选择题 We consider it ______ to make it clear that for further transactions D/ P will only be accepted if the amount involved for each transaction is below￡1000.00 or its ______ in Renminbi at the conversion rate then prevailing. A．advised, equal B．advised, equal C．advisable, equivalent D．equivalent, advisable

单项选择题 某人体内的含水量占体重的43%，此人可能为( ) A．新生儿 B．正常成年人 C．老年人 D．消瘦者 E．过度肥胖者

多项选择题 常用的抽样方法有（）等方法。