卵巢无性细胞瘤较好的肿瘤标记物为()
A.CA125
B.AFP
C.hCG
D.LDH
E.CA19-9
参考答案:D
It’s too late. __________ go home?
A.Why not
B.Why don’t
C.Would you like
D.What about
在直流电路中,电感元件相当于开路