酶联免疫法检测生乳及纯牛奶中阿维菌素类(伊维菌素)的前处理中,氮气吹干的温度是()℃。
A、30
B、40
C、50
D、60
参考答案:D
— Can you give me ______ money?
— Sorry, I don't have ______. [ ]
A. some, some
B. some, any
C. any, some
D. any, any
采取()消除粮堆表层结露。
A.翻动粮面
B.适时通风
C.通风除湿
D.熏蒸抑菌