A well-designed system should be(73)。①easily understood②reliable③straightforward to implement④straightforward to maintain

When under maneouvring conditions with the machinery being manually operated the control unit or console should be （）

When under maneuvering conditions with the machinery being manually operated the control unit or console should be

When it is necessary to open a refrigeration system for repairs and the system will be open for more than a few minutes, the open ends of the system should be （）.

A semisubmersible rig under tow should be ballasted down if（）.

To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.

Without systems software, application software in a computer is(73)

What technique should be used on BGP edge routers to prevent a multi - homed autonomous system from becoming a trans it system?（）

In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.

In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.

Under which two circumstances should Spanning Tree Protocol be implemented?（）

The pressure differential across a diesel engine lube oil system duplex filter should be checked to （）