单项选择题
A disadvantage of a four-stroke/cycle diesel engine is （）
A.higher working temperature of piston and cylinder B.the use of scavenge ports C.fewer power strokes per revolution of the crankshaft D.part of the fuel is burned as the piston is moving away from top dead center
单项选择题 The cubic inch(or liter) displacement of a cylinder is determined by the diameter of the piston and the （）
单项选择题 (Piston area)X(Piston stroke)K(numbers of the cylinders)=engine（）
单项选择题 Which of the listed conditions will affective pressure the most in the cylinder of a diesel engine?（）
