味毛和嗅毛()。
A.两者都是微绒毛
B.两者都是动纤毛
C.两者都是不动纤毛
D.前者是微绒毛,后者是不动纤毛
E.前者是不动纤毛,后者是微绒毛
参考答案:D
Joe will come to the party at Jane and Ian's, won't he? ()
A.Oh, yeah, I forgot.
B.It‘s at 8 o‘clock.
C.Yeah, he‘s bringing his cousin, Sandy
D.Yeah, it‘s a nice party
给水处理的主要消毒方法有哪些?试述其主要优缺点与适用条件?