某施工单位编制的某工程网络图,如下图所示,已知计划工期等于计算工期。
上述网络计划的计算工期Tc为()天。
A.15
B.17
C.19
D.24
参考答案:D
Which categories of NAVTEX messages may not be selectively rejected through receiver programming?()
A.Navigational warnings
B.Weather warnings
C.SAR and distress alert information
D.All of the above