狂犬病临床分期为:()
A、兴奋期,麻痹期,恢复期
B、前驱期,麻痹期,恢复期
C、前驱期,兴奋期,恢复期
D、前驱期,兴奋期,麻痹期
参考答案:D
Those ____ things need water and air, or they will not keep themselves ____. [ ]
A. live; living
B. living; alive
C. alive; lively
D. lively; live
某台离心水泵通过调速,转数下降了25%。假设在原转数条件下,扬程为H,轴功率为N。则调速后的水泵扬程H1、轴功率N1应为下列哪项?()
A.H1=0.30H,N1=0.3N
B.H1=0.42H,N1=0.27N
C.H1=0.56H,N1=0.42N
D.H1=0.72H,N1=0.61N