【多选题】泡沫灭火器主要用来扑灭 的初起火灾。( )
【单选题】It was on March 10th __________ they first met.
【简答题】生石灰按照煅烧程度不同可分为 、 和 。
【多选题】关于饭店灭火器材的使用,下列论述正确的有( )。
B.
泡沫灭火器,适用于易燃液体、金属、电走火、纸类、纺织品、电器、油类等多数类型的火灾灭火
C.
干粉灭火器,主要用来扑灭油类、可燃液体和可燃固体物体的初起火灾
D.
酸碱灭火器,主要用于木料、纸类、纺织用品等固体物质着火
【简答题】Xinhua News: March 10 th , 2014 Malaysian Airlines says there is still no information on the location of its flight MH370, more than 24 hours after it lost contact with ground. The airline spokesman s...
【判断题】串级调节系统副调节器一般选用调节器规律是比例调节,主调节器用比例积分调节
【单选题】采用拟除虫菊酯处理居民蚊账不适用于消灭下列哪种蚊虫:( )
【单选题】An IT company has contracted with a trading company selling 100 desktop PCs with the total contract price amounting to £23,000 and delivery date by the 10th of March. On the 20th of February, the IT c...
【判断题】实轴上根轨迹右端的开环实数零点、极点的个数之和为奇数