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Seeingthatmoreandmorepeopleareconcernedaboutthequality of environment,Johnisconsideringstarting aninteriordecorationbusiness.Itseemscertaintoearn buthedoesnotyethaveenoughmoney it.(profit, invest, indoor)

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This isprimarilyusedforofthesound qualityofelectronicmedia.ItwasinventedintheUS, butnowitisused.(improvement,globalscale,device)

WhenthefirstsettlerscametoAmerica,theirprincipalhousehold utеnѕіlѕ( 器皿)соnѕіѕtеdоfаfеwроtѕ,раnѕаndѕоmеbоwlѕinonecornerofthehouse.Therewasn'tmuchmaterialaroundthem.They inarestaurantasweoftendonowadays.(temptation,dineout,stack)

4B35A型和12Sh-28型水泵的型号意义( )

A. 数字35是指扬程35m,28是指比转数是280
B. 数字35是指比转数350,28是指扬程28m
C. 4或12是指水泵出水口直径(英寸)
D. Sh是单吸悬臂式,B指单级双吸式。

比转数为1200的水泵应在( )

A. 出口闸阀全关情况下启动;
B. 出口闸阀半关情况下启动;
C. 出口闸阀全开情况下启动;
D. 出口闸阀开关均可