汽油发动机电控燃油喷射系统的各缸喷油时刻可分为()。
A.同时喷射
B.随机喷射
C.分组喷射
D.顺序喷射
E.单点喷射
参考答案:A, B, C, D
根据提示完成下面一段话。
Wang Li is my 1___________ (姑姑). She is an 2___________ (工程师). She likes drawing
3___________ (图画). She works in a factory. She designs 4___________ (小汽车). She goes to
work 5___________ (乘小汽车).
香港的报案火警急救号码是()。
A.999
B.191
C.110
D.112