单项选择题
Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of （）
A.less even torque B.higher cylinder head temperatures C.fewer power strokes per revolution D.greater weight/size requirements
单项选择题 A disadvantage of a four-stroke/cycle diesel engine is （）
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（）
