室内用双小车吊钩桥式起重机,起重量50/10+50/10t,跨度28.5m,工作级别A5,其型号如何表示?
参考答案:
起重机QE50/10+50/10-28.5A5
若有一简谐振动,其位移x=2sin(8t+30),则其速度的幅值为().
A.2
B.16
C.128
D.8
A project management team has subcontracted work to a service company.Which of the following tools is the best choice to assure that this company will be able to meet the quality requirements of the project ?()
A.Quality audi
B.Deliverable inspectio
C.Fixed price contrac
D.Service level agreemen