手柄在非零位停车后,停车期间手柄一直未发生变化,再次动车手柄仍处于非零位,当速度超过3km/h或者运行距离超过()m将启动手柄防溜。
A.10
B.20
C.30
参考答案:A
Last month, the Japanese government expressed their thanks for the aid they ________ from China.[ ]
A. receive
B. are receiving
C. have received
D. had received
闸阀有什么特点?