Which action(s) is/are included in crane o
题型:单项选择题
问题:
Which action(s) is/are included in crane operations?()
A.Normal boom stowage and shutdown operations
B.Emergency shutdown operation
C.Removing booms from stowage
D.All of the above
Which action(s) is/are included in crane operations?()
A.Normal boom stowage and shutdown operations
B.Emergency shutdown operation
C.Removing booms from stowage
D.All of the above