[1501] The e x plosiv e range of a f u e l lies bet we en t he lower explosiv e li m it and th e ______.A. flash point B. ig ni tio n te m perature C. u pp e r ex p losive li m it D. fi re p ointK EY: C 一燃料旳爆炸范围在爆炸下限和爆炸上限之间。[15 0 2] The e xtern a l flot at ion bladd e r o f an imm e rsion s u it s hould b e inflated ______.A. only a f ter t wo hours in the w a te r B. onl y after f o ur hours i n th e wa te rC. b efore entr y into the w ater D. upon e nt ry into the waterKEY: D 浸水服外部旳漂移球片应当已进入水中就充气,[150 3] The e ye o f a h u rr i c an e i s su r r o unde d b y den s e b l ac k c um ul o n i mb us clouds which a re called ______.A.wall cl oud B. n i mb os tratus cl o ud C. ba r D. F un n el KE Y: A 台风眼去被很厚旳积雨云包围,这叫做云墙。[15 0 4] The eye of t he hu r ricane has ______.A. ve r y hi gh bar ometric p r e s sure B. average ba rom e tric p r e ssureC. t h e lowe s t barome t ric p res su re D. no c h a n g e i n barome tri c p r es s u r eK E Y: C 飓风眼区有一种最低低压。[1 5 0 5] The FIRST tr e atment for a s urface b u rn is to ______.A. w a s h the bu rne d a r e a w i th a warm soap a n d w ate r sol utionB. f loo d, b a th e, o r im merse t h e b urn e d are a i n co ld wate rC. cov e r t he b urn ed a rea w i t h t alcum powder a n d b a n d a g it co v er the burned a r e a w ith t a l cum powder a n d ba n dage it ti gh...