燃烧装置应设置在钻机主导风向的（），离钻机应有一定的安全距离。
A、左风侧
B、右风侧
C、上风侧
D、下风侧
参考答案：C
He became inspired when he thought about fighting against cholera ordinary people .
A, that, exposed to B, to which, exposed C, that, are exposed D, which, are exposed to
喷煤钟阀检查内容（）。
A、阀口是否严密
B、气缸是否漏气
C、进出气是否跑风
C、螺栓有无松动
