单选题If there are a number of survivors in the water after abandoning ship,they should().Atie themselves to the unit so they won't drift with the currentBform a small circular group to create a warmer pocket of water in the center of the circleCsend the strongest swimmer to shore for assistanceDform a raft by lashing their life preservers together
单选题
If there are a number of survivors in the water after abandoning ship,they should().
A
tie themselves to the unit so they won't drift with the current
B
form a small circular group to create a warmer pocket of water in the center of the circle
C
send the strongest swimmer to shore for assistance
D
form a raft by lashing their life preservers together
参考解析
解析:
暂无解析
相关考题:
单选题In a centrifugal Freon refrigeration system, the overall capacity of the system is increased by()Aopening more bypass linesBopening additional expansion valvesCadding refrigerantDspeeding up the machine
单选题K-CHIEF500监视与报警系统中,一旦发生报警,下列哪种情形不会出现()。A时间,日期和识别报警文本被打印出来B控制室面板上的报警指示灯开始闪烁C在控制室面板蜂鸣器被激活D报警显示为绿色
单选题电控柴油机各种功能的实现,是将检测回来的柴油机各种运行状态信号送到计算机进行处理,处理结果将对柴油机的()进行控制。 ①综合系统; ②电子调速系统; ③电子系统; ④排气阀系统; ⑤燃油喷射系统; ⑥增压系统。A①②③⑤B①③④⑥C②③④⑤D②④⑤⑥
单选题关于燃烧室部件的机械负荷,论述不当的是()。A气缸套和气缸盖的机械负荷主要来自气体力和摩擦力B活塞的机械负荷主要来自气体力和惯性力C高频气体力的变化周期为一个工作循环的时间D惯性力变化的周期为曲轴一转的时间
单选题EGC接收机不能完成()A自动在NCS公共信道上接收INMARSART卫星播发的MSIB自动接收NAVTEX发射台发射的MSIC自动在NCS公共信道上接收INMARSART卫星播发的特定商业业务DA/B/C
单选题在单杠杆差压变送器投入工作时,其截止阀、平衡阀、冲洗阀的开关顺序为()。A先开截止阀-开冲洗阀-开平衡阀-关冲洗阀B先开冲洗阀-开截止阀-开平衡阀-关冲洗阀C关冲洗阀-开平衡阀-开截止阀-关平衡阀D关冲洗阀-开截止阀-开平衡阀-关截止阀