Aportablefoam(stored-pressuretype)fireextinguisherwouldbemostusefulincombatingafirein（）.
A. generators
B. oildrums
C. thebridge
D. combustiblemetals
查看答案
治邪在少阳，寒热往来证，柴胡最宜配伍的药物是（）
A. 黄芩
B. 黄连
C. 黄柏
D. 栀子
E. 金银花
Alifelinemustbeconnctedtotheliferaft（）.
A. atthebow
B. atthestern
C. inthemiddle
D. allaround
Ahydrostaticreleasemechanismforaliferaft（）.
A. mustbewetbeforeitwillrelease
B. shouldbekeptinawatertightexceptinanemergency
C. willinflatetheraftinitscradleifoperaterdmanually
D. mustbesubmergedtoacertaindepthtoreleaseautomatically
Afoam-typeportablefireextinguisherwouldbemostusefulincombatingafirein（）.
A. soildmaterialssuchaswoodorbalesoffiber
B. flammableliquids
C. apieceofelectricalequipment
D. combustiblemetallicsolids
微信支付 
支付宝支付