A、the raising of the standards of teaching and the reform in curriculum B、the raising of the standards of teaching and learning and the restructuring of the schools C、the raising of the standards of teaching and the improvement of the standards of learning D、None of the above
A、volume of liquid in the tank B、volume of displacement of the vessel C、location of the tank in the vessel D、height of the center of gravity of the vessel
A、At the head of the tow B、75m from the head of the tow C、120m from the head of the tow D、180m from the head of the tow
A、centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump B、centerline of the pump and the suction liquid level when the source of liquid is above the pump C、centerline of the pump and the level of the discharge liquid D、liquid levels of the suction and discharge
A、the openness of the mouth B、the position of the tongue C、the shape of the tip D、the width of the vowels
A、The breath of the tank B、The length of the tank C、The amount of liquid in the tank D、The position of the tank in relation to the center line of the vessel