进攻路线少、疏散扑救困难是()特点。

下列()场所宜采用雨淋系统。

下列物品中，因遇水而发生自燃的是()。

高层饭店客房的灭火器配置场所危险等级为()。

根据灭火器配置场所危险等级划分，下列场所属于轻危险级的是()。

柴油机吊缸时对活塞环进行检查和测量的项目有（）。Ⅰ.径向厚度（磨损）测量Ⅱ.搭口间隙测量Ⅲ.天地间隙测量Ⅳ.环背隙测量Ⅴ.环弹力检查Ⅵ.表面损伤检查

Vee-type engines have the connecting rods from two cylinders connected to each _____ of the crankshaft.

A fire in a pile of dunnage would be classified as a _____.

能提高边界润滑中形成吸附膜能力的添加剂是（）。

The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.