A:亚洲、太平洋
B:欧洲、大西洋
C:北美洲、北冰洋
D:大洋洲、北冰洋
(____)A. What's for dinner?
(____)B. What would you like?
(____)C. I'd like some beef, please.
(____)D. Would you like a knife?
(____)E. Pass me the bowl, please.
灯泡L1、L2串联, 用电流表测得灯L1的电流是0.3 安, 则 通过灯L2的电流为:()