接待工作的原则是:诚恳热情、讲究礼仪、细致周到、按章办事、俭省节约、( )
A.实事求是
B.忠于职守
C.严肃认真
D.保守秘密
参考答案:C
测定药物油水分配系数时最常用的有机溶剂为()
A.氯仿
B.n-辛醇
C.乙酸乙酯
D.苯
My brother’s birthday is coming.I’m going to buy a present him.
A.to
B.with
C.in
D.for