It should be observed（）the master is not bound to show both the number of packages and the weight.

A.revise the operating manual when rig personnel change
B.be fully aware of the provisions in the operating manual
C.maintain the rig's construction portfolio
D.All of the above

A.the station bill is posted in each compartment
B.temporary personnel and visitors are advised of emergency stations
C.names of crew members are listed on the station bill
D.no changes are made to the station bill

A.to plan
B.planning
C.for planning
D.in planning