【单选题】【单选】The discharge flow of a reciprocating pump is _____
【单选题】A centrifugal pump produces flow with a resulting discharge head by energy conversionIt is typical for the energy conversion to follow the order of _____.
A.
mechanical energy to kinetic energy to potential energy
B.
mechanical energy to potential energy to kinetic energy
C.
potential energy to mechanical energy to kinetic energy
D.
kinetic energy to mechanical energy to potential energy
【单选题】下列关于石材饰面干挂法解释新正确的是()
B.
石材干挂法主要的承重构件为挂件和固定在墙体或钢架上的螺栓
D.
石材干挂法有分无龙骨干挂和有龙骨干挂,两种的特点相近,都可以适用于造型多变的墙面
【多选题】十八局中央纪委五次全会上强调,要突出问责,坚持 “一案双查”,( )既追究主体责任、监督责任,又严肃追究领导责任。
D.
出现区域性、系统性腐败案件的地方、部门和单位
【单选题】饰面板干挂法施工工艺中用于挂件与石材间粘结固定的材料为( )。
【单选题】A centrifugal pump attempting to develop flow against a closed discharge valve has a/an _____.
C.
internal slippage of 0%
D.
shut off horsepower rating of 100%
【简答题】不属于原核细胞型的微生物是 ( )A. 螺旋体 ; B. 放线菌 C. 病毒 ; D. 立克次体