原式=x+1(x+1)(x-1)=1x-1;
故选B.
在机动车安全技术检验表(人工检验部分)中,若送检车中没有该项目,则在判定栏中填()。
A、○
B、×
C、-
D、不填
The process of (72) schedule activity durations uses information on schedule activity scope of work, required resource types, estimated resource quantities, and resource calendars with resource availabilities.
A.estimating
B.defining
C.planning
D.sequencing