大中型的制冷压缩机具有相应的卸载装置，以满足运行需要。
参考答案：对
It was reported that nine Chinese people ______ in a balloon crash (坠毁） in Egypt on February 26,2013. [ ]
A. are killed
B. were killed.
C. will kill.
D. have killed.
如何装载禽畜等活动物？
