【单选题】已知晶振频率为12MHz,要使用定时器T1的中断,使定时器T1工作在方式2,定时时间为50 us,那么,TL1 = ?
【简答题】何谓原单位法?在出行生成预测中应如何确定未来的原单位?利用附近城市的居民出行调查数据,求生成原单位?
【简答题】钢筋冷拉的主要控制参数是 ( )、( )。
【单选题】如果你尝试为高龄祖父母设计居住地的居家照明系统,因该注意哪些细节?
B.
光线强度适中,避免过强的灯光照明造成老人家晕眩
【单选题】What is a Free Body Diagram (FBD)?
A.
An FBD shows the forces acting on a body.
B.
An FBD shows the forces and their locations on a body.
C.
An FBD shows the forces and accelerations and their locations acting on a body.
D.
An FBD shows the forces and torques and their locations acting on a body.
E.
An FBD shows the forces and velocities and their locations acting on a body.
【单选题】51单片机外fosc=12mhz,定时器t1以方式2工作计时50us,则计数初值为 ?。
【单选题】已知晶振频率为12MHz,要使用定时器T1的中断,使定时器T1工作在方式2,定时时间为50 us,那么,TL1 = ? (答案选A)
【简答题】T1,定时器,工作方式2,定时50us,晶振频率12MHZ TMOD= TH1= TL1= IE= TR1=