()是一种驱动轮与马达直接连接的曳引机,由于不使用齿轮箱,因此叫做无齿轮。
A、无齿轮曳引机
B、随行电缆
C、厅门上下行指示
D、梯级
参考答案:A
—I know nothing about the history of the telephone. Could you tell me ?
— Yes, in 1876
A.who invented the telephone
B.how the telephone was invented
C.when was the telephone invented
D.when the telephone was invented
驾驶人有使用其他车辆号牌、行驶证嫌疑的,交通警察可依法扣留车辆。