（）为在盘车时掌握轿厢的平层状况，曳引绳上应标注层楼平层标志。
参考答案：对
He had his leg in the accident and was sent to the nearest hospital at once. [ ]
A. injuring
B. injured
C. injure
D. to have been injured
B．P/2
C．2P
D．4P
