现推行的SPC核心工作控制图是哪一种类型？（）
A.计量型
B.计数型
C.测量型
参考答案：A
毒性强，小剂量即能使易感机体致死（）
A.外毒素
B.内毒素
C.抗毒性免疫
D.细菌的荚膜
E.细菌的胞外酶
---- Have you heard that Tom, as well as his parents, _____ moved to Beijing?
---- Really? No _____ I haven’t seen him for a long time.
A．have; doubt
B．has; wonder
C．have; wonder
D．has; choice
