采用（）推焦串序结焦过程产生的膨胀对炉墙的侧压力最大。
A. 9-2
B. 2-1
C. 7-2
D. 5-2
查看答案
Areciprocatingpumpbelongsto（）accordingtoitsworkingprinciple.
A. injectorpumps
B. positivedisplacementpumps
C. centrifugalpump
D. centripetalpumps
Injuriesresultinginlossoflifeorincapacitation，aboardvessels，mustbereportedtothe（）.
A. MOC
B. CCS
C. MSAOFCHINA
D. InternationalAssociationofNavigation
Personswhohaveswallowedanon-petroleumbasedpoisonaregivenlargequantitiesofwarmsoapywaterorwarmsaltwaterto（）
A. inducevomiting
B. absorbthepoisonfromtheblood
C. neutralizethepoisonintheblood
D. increasethedigestiveprocessandeliminatethepoison
Whatisthepurposeofareliefvalve?（）
A. tofill2tanksatthesametime
B. tousepumpatahigherpressure
C. toreturnliquidtosuctionsideifdischargevalveisclosed
D. Alloftheabovearetrue
微信支付 
支付宝支付