They()since last night. They are about to finish the work.A. are cleaning the systemB. have been cleaning the systemC. had cleaned the system
They()since last night. They are about to finish the work.
A. are cleaning the system
B. have been cleaning the system
C. had cleaned the system
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In the PDM, common constraints include:A.Start-to-startB.Finish-to-startC.Finish-to-finishD.B and C onlyE.A, B, and C.
32 In the PDM, common constraints include:A. Start-to-startB. Finish-to-startC. Finish-to-finishD. B and C onlyE. A, B, and C
PDM includes four types of dependencies or precedence relationships:().The completion ofthe successor activity depends upon the initiation of the predecessor activity. A.Finish-to-StartB.Finish-to-FinishC.Start-to-StartD.Start-to-Finish
PDM includes four types of dependencies or precedence relation ships：(73)The completion of the successor activity depends upon the initiation of the predecessor activity．A．Finish-to-StartB．Finish-to-FinishC．Start-to-StartD．Start-to-Finish
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PDM includes four types of dependencies or precedence relationships…(73)，the initiation of the successor activity，depends upon the initiation of the predecessor activity．A．Finish-to-StartB．Finish-to-FinishC．Start-to-StartD．Start-to-Finish
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