Production of mechanical foam by a portable in-line foam proportioner（）. ["increases the size of foam bubbles formed","increases the rate of foam production","improves the extinguishing properties of foam","gives the nozzleman more freedom of movement，since it can be placed anywhere in the hose line"]
以下哪个车型配备EPB电子手刹车（）。 ["1.6T领先技术型","1.6T精英技术型","2.0L领先时尚型","1.6T时尚技术型"]
Marline is（）. ["four-stranded sisal line","three-stranded cotton line","sail twine","two-stranded hemp cord"]
全新君威2.0L的最大功率是（）Kw/rpm。 ["118 Kw\/6200rpm","113 Kw\/6200rpm","123 Kw\/6000rpm","132 Kw\/6000rpm"]
在农电生产系统中，一条支线需要挂接到某条线路的2号杆上，需用到下列哪个功能（） ["线路支线","线路开口","线路改接","投入线路"]
简述安全分析的意义和分类。
