A:向外界散热
B:做为油罐车的标志
C:发出响声,提醒其他车辆和行人的注意
D:把电荷导入大地,避免由静电造成危害
19____650≈19万 99____365≈100万
6____537260≈7000万 1____060060≈1000万
—Yes, I do. And l also know that some of them are scaring.