下列哪种特点为伤寒杆菌所不具备的()
A.长杆状
B.有荚膜
C.有鞭毛
D.有外毒素
E.必须在血平皿中生长
参考答案:A, B, D, E
---Mike’s radio has gone wrong. He will have it ______ tomorrow.
---Why not have Aunt Wang ______ it? Nobody can if she can’t.
A.fix; fixed
B.fix; fix
C.fixed; fixed
D.fixed; fix
放炮前要设的“三警戒”指的是什么?