【单选题】The air distributor is conventionally driven by ____ and distributes ____ into each cylinder by certain sequence.
B.
camshaft; starting air
C.
electronic motor which is controlled by
D.
electronic motor which is controlled by a computer; starting air
【判断题】Tony and Don Shirley have nurtured a friendship and understanding that would change both their lives.
【单选题】关于着色剂说法错误的是。
A.
是指加入胶料中用以改变制品颜色为目的的物质。
【多选题】资本主义原始积累的主要途径有______