题目内容

所谓“地理纬度”是指__。 The "geographical latitude" refers to

A. 地球上某点的法线与赤道面的交角 The angle between the normal of a point on the earth with the equatorial plane
B. 地球上某点和地心连线与赤道面的交角 the angle between a point on the earth with the center of the earth at the equatorial plane
C. 地球椭圆子午线上某点和地心连线与赤道面的交角 The intersection of a point on the earth's elliptic meridian and the geocentric line with the equatorial plane
D. 某点在地球椭圆子午线上的法线与赤道面的交角 The intersection of the normal line of a point on the earth's elliptic meridian with the equatorial plane

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地理纬度是某地子午线的____与赤道面的交角。Geographical latitude is the crossing angle between line of the meridian of a point on earth and Equatorial plane

A. 半径 radius
B. 切线 tangent
C. 法线 normal
D. 铅垂线 plumb

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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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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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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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所谓“地理纬度”是指________。 The "geographical latitude" refers to______

地理纬度是某地子午线的__________与赤道面的交角。Geographical latitude is the crossing angle between ______line of the meridian of a point on earth and Equatorial plane

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.

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.

所谓“地理纬度”是指__。 The "geographical latitude" refers to

地理纬度是某地子午线的____与赤道面的交角。Geographical latitude is the crossing angle between line of the meridian of a point on earth and Equatorial plane

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.