非霍奇金淋巴瘤中预后好的细胞来源为()
A.T细胞
B.B细胞
C.非T、非B细胞
D.T细胞和B细胞混合
E.NK细胞
参考答案:B
This machine doesn't ______. The workers have to use ______ one. [ ]
A. work; another
B. go; other
C. use; the other
D. run; others
保护接地(protective earthing)