中国国际航空公司二字代码是()
参考答案:国航
I’m going to take a vacation. Could you please __________me _________some information about interesting places to travel?
A.offer, to
B.offer, for
C.provide, with
D.provide, for
某海员,30岁,以罐头食品为主,近半月来反复牙龈出血,皮下出血
从营养角度考虑缺乏哪种营养素?()
A.蛋白质
B.钙
C.维生素C
D.维生素K
E.维生素B1