单项选择题
The fire is spreading. Do not attempt to extinguish it.()
A.火势得到了控制,不要试图扑灭它。 B.火势得到了控制,请试图扑灭它。 C.火势正在蔓延,不要试图扑灭它。 D.火势正在蔓延,请尝试扑灭它。
单项选择题 Post two lookouts with binoculars.()
单项选择题 Wear the breathing apparatus before entering an enclosed space.()
单项选择题 For the duties assigned in the muster list, one person may do more than one work and one work may be done by more than one person.()