Increased air （） will raise scavenge efficiency and allow a greater mass of air to be compressed； more fuel may now be burned giving an increased power.

Burning fuel with a high sulfur content in a diesel engine will （） A: increase thermal efficiency B: cause clogging of the fuel system C: increase the ability of the engine to start in cold weather D: produce corrosion in the cylinder and exhaust system at low load

The fuel oil system for a diesel engine can be considered in two<br/>parts---- the fuel supply and the ()systems A: fuel purification B: fuel combustion C: fuel treatment D: fuel injection

The fuel oil system in the ship's engine room is not included . A: Fuel purifying system B: Fuel transfer system C: Fuel supply system D: Fuel cooling system

FMV is the short for ( ). A: Fuel Metering Valve B: Fuel Metering Vane C: Fuel Management Valve D: Fuel Metering Value

If the voltaic efficiency of the battery is 90%, and the coulombic efficiency of the battery is 90%, the roundtrip efficiency of storage in % for the battery is:<br/>______

If the voltaic efficiency of the battery is 90%, and the coulombic <br/>efficiency of the battery is 90%, the roundtrip efficiency of storage in<br/>% for the battery is:______

对于同一系统，环境效率与资源效率关系是（ ）Which of the following describes a right relationship between environmental efficiency and resource efficiency for the same system（ ）? 环境效率与资源效率无关;The environmental efficiency is not related to the resource efficiency|资源效率越高，环境效率也越高;The higher the resource efficiency, the higher will be the environmental efficiency|环境效率恒等于资源效率;The environmental efficiency is always equal to the resource efficiency|资源效率越高，环境效率就越低;The higher the resource efficiency, the lower will be the environmental efficiency

A common trouble with the fuel pump plunger or fuel valve spindle is （）.

Brazil is the world’s second largest producer of ______. A: biofuel B: fossil fuel C: corn fuel D: ethanol fuel