答案:B
— There is milk and cream. Do you have a( n)___?
— No, I think either is OK for me.
[ ]
A. intention
B. choice
C. preference
D. impression
制订地面水水质卫生标准的原则是()。
A.防止地面水传播疾病
B.防止地面水引起急、慢性中毒及远期效应
C.保证地面水感官性状良好
D.保证地面水自净过程正常进行
E.以上都是