样品的保存与管理()。
A.T=8℃,RH≦40%
B.T=10℃,RH≧30%
C.T=5℃,RH≦20%
D.T=12℃,RH≧50%
参考答案:A
English is spoken by ______ people. [ ]
A. a lot
B. much many
C. a large number of
D. a great deal of
某电开信用证,已附注“详情后告”,它只能视为无效文件的简电通知书,不能凭以议付。( )