The lower section of a piston is called the （）.
Pistons may be made in （） in order to keep the weight down for balancing purposes at high speed.
The function of the piston compression rings used in a diesel engine is to （）
While engine is in operation the piston moves up and down, thus causing the rotation of the （）.
In a medium speed diesel engine, a trunk type piston may be cooled by（） Ⅰ.oil circulation though passages in the piston crown Ⅱ.heat transfer through piston rings and liner wall
The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and （） of the pistons in the cylinders.
The lower end of each piston rod is reduced in diameter to fit a bore in the （）, this being secured to the piston rod by a nut.
The delivery rate of an axial-piston hydraulic pump is controlled by varying the position of the （）.
The piston rings are manufactured with a diameter （） the bore of the cylinder.
The main purpose of the piston oil scraper rings is to （）.
(Piston area)X(Piston stroke)K(numbers of the cylinders)=engine（）
The outside diameter of the pipe is （） the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.
The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.
The sealing function of the piston ring is brought about by the gas pressure above and behind the piston ring, which forces it （） against the bottom of the ring groove, and （） against the cylinder wall.
The upper section of a piston is called the （）
Which of the following statements represents the function of the compression rings installed at the top of a diesel Engine piston?（）
The piston cooling system may employ similar components, except that （） is used instead of a head tank.
If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to（）
The main function of piston compression rings is to （）
Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.
During working, when the piston is near the （）, the air ignites the fine spray of fuel.
Among the rings of a piston the （） one is subjected to the greatest load and temperature.
The lowest ring of a piston is （）.
When you overline your lips, you can choose the areas you want to overline, like the Cupid’s bow or bottom lip instead of the entire rim.
