碱式滴定管适宜于装碱性溶液,有需要避光的溶液,可以采用()。
参考答案:茶色或棕色滴定管
Spelling Bee is a contest competitors, usually children, are asked to spell as many words as possible.
A.which
B.where
C.what
D.When
和客户维护人员很熟悉了,完成工作后,在客户机房闲聊公司待遇和其它厂家待遇、产品性能等。()