No repairs can be done without the Harbor Master’s（）.

A.the stated value
B.the sound valve of the vessel at the time of occurrence
C.the lost value
D.the insured value

A.provision order
B.discharging planning
C.annual repair
D.outward clearance

A.better control capabilities
B.less maintenance and repair
C.fewer personnel needed during jacking
D.less preload needed