—Mike wants to know if          __ a picnic tomorrow.

—Yes. But if it _______, we'll visit the museum.[ ]

A. you have; will rain        

B. you will have; will rain

C. you will have; rains        

D. will you have; rains

当转臂翻转到位时，（）停止动作，这时再操作翻矸机支承与翻转手柄，使转臂复位，当转臂复位后，信号灯YE亮，显示（）可以工作。信号灯2GN亮。

A.转臂

B.翻转手柄

C.推车机

D.翻矸机