CLOSE WATERTIGHT DOORS AND REPORT.的意思是:关闭水密门并报告。
On a ship,watertight doors should be operated().
On a ship,watertight doors should be operated().
Doors are generally formed in the () of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.
Hardware locks, keypads on entry doors, badge readers, and biometric readers are all examplesof which of the following security types?()
() fire doors, windows, hatches, accesses and ventilators.
In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ().
Doors are generally formed in the () of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.
Varnish is certainly for (), cabin doors and other woodwork.
In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ().