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压力水雾灭火系统，它采用高压力水泵，通过高压水管特殊的喷嘴作用产生__，从而达到冷却和灭火效果. Pressurized water mist fire extinguishing system which uses a high pressure water pump to generate through a special nozzle of a high pressure water pipe, achieving cooling and fire extinguishing effects.

A 泡沫 Foam
B 雾粒 mist particles
C 蒸汽
D 氮气

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必须完全确认处所没有人员存在时施放的灭火系统为________？Which fire extinguishing system must be completely confirmed that no person exists in the premises.

A 泡沫灭火系统 Foam fire extinguishing system
B 水灭火系统 Water fire extinguishing system
C 自动喷水系统 Automatic water spray system
D 固定式二氧化碳灭火系统 carbon dioxide fire extinguishing system

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干粉灭火系统是以______为动力以达到扑救火灾的目的.The dry powder fire extinguishing system is powered by _ to achieve the purpose of fighting fire.

A 海水压力 Seawater pressure
B 泡沫压力 Foam pressure
C 氮气 Nitrogen
D 蒸汽 Steam

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以下不宜作为陆标定位时物标的是：________ 。 Which of the following objects is not suitable for position fixing by landmarks？

A. 灯塔 Lighthouse
B. 孤立的小岛 Isolated island
C. 平坦的海滩 Flat beach
D. 显著的山峰 Significant peak

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在全球任意位置的用户在任何时候至少能同时观测到仰角大于5°的 ____ 颗卫星。At least_satellites with an elevation greater than 5 degrees can be observed at any time by users at any position in the world.

A. 3
B. 4
C. 5
D. 2

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A 泡沫 Foam B 雾粒 mist particles C 蒸汽 D 氮气

必须完全确认处所没有人员存在时施放的灭火系统为________？Which fire extinguishing system must be completely confirmed that no person exists in the premises.

干粉灭火系统是以________为动力以达到扑救火灾的目的.The dry powder fire extinguishing system is powered by ___ to achieve the purpose of fighting fire.

以下不宜作为陆标定位时物标的是：________ 。 Which of the following objects is not suitable for position fixing by landmarks？

在全球任意位置的用户在任何时候至少能同时观测到仰角大于5°的 ________ 颗卫星。At least_____satellites with an elevation greater than 5 degrees can be observed at any time by users at any position in the world.

A 泡沫 Foam
B 雾粒 mist particles
C 蒸汽
D 氮气

干粉灭火系统是以______为动力以达到扑救火灾的目的.The dry powder fire extinguishing system is powered by _ to achieve the purpose of fighting fire.

在全球任意位置的用户在任何时候至少能同时观测到仰角大于5°的 ____ 颗卫星。At least_satellites with an elevation greater than 5 degrees can be observed at any time by users at any position in the world.