The crank pin journal is provided with large bores for （）.
The crank pin journal is provided with large bores for （）.
Operating conditions in the crank chamber are very （） those in the cylinder.
Operating conditions in the crank chamber are very （） those in the cylinder.
With the crank in position in the engine， some measurements can be taken by a special bridge gauge and （）.
With the crank in position in the engine， some measurements can be taken by a special bridge gauge and （）.
With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).
With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).
In Yuan Dynasty, people made some improvements on lulu by fixing a crank onto the pulley.( )
In Yuan Dynasty, people made some improvements on lulu by fixing a crank onto the pulley.( )
Engine （） refers to the relative time of position of crank， at which each operation during the cycle is commenced and is completed.
Engine （） refers to the relative time of position of crank， at which each operation during the cycle is commenced and is completed.
下面哪些属于转动导杆机构（ ） A: guide bar B: rotating guide-bar mechanism C: double-crank mechanism D: slider mechanism
下面哪些属于转动导杆机构（ ） A: guide bar B: rotating guide-bar mechanism C: double-crank mechanism D: slider mechanism
下面哪些属于转动导杆机构（ ） A: guide bar B: rotating guide-bar mechanism C: double-crank mechanism D: slider mechanism
下面哪些属于转动导杆机构（ ） A: guide bar B: rotating guide-bar mechanism C: double-crank mechanism D: slider mechanism
整车低压电源工作模式一般分为（） A: PowerOFF B: IGON C: Crank D: ACC
整车低压电源工作模式一般分为（） A: PowerOFF B: IGON C: Crank D: ACC
下面函数定义中正确的是 。 A: double fun(double f1, double f2){ } B: double fun(double f1; double f2){ } C: double fun(double f1, double f2); { } D: double fun(double f1, f2){ }
下面函数定义中正确的是 。 A: double fun(double f1, double f2){ } B: double fun(double f1; double f2){ } C: double fun(double f1, double f2); { } D: double fun(double f1, f2){ }