In the following descriptions, which are correct? A: The C1-FF structure with "AND" gate can be regarded as a "signal sensitivity delay" unit. B: The C1-FF structure with the “OR” gate can be regarded as a persistence detection unit. C: Incoherent feedforward I1-FF can be regarded as a pulse generator. D: Incoherent feedforward I1-FF can be regarded as a response accelerator. E: Both feedback inhibition and incoherent feedforward I1-FF have the function of accelerating response.

P0.0所控制LED被命名为LED。下面程序片段中()可以使LED闪烁两次。A.()LED=0；delay()；()B.()LED=0；delay()；LED=1；delay()；()C.()LED=0；delay()；LED=1；delay()；()LED=0；delay()；LED=1；delay()；()D.()LED=0；delay()()LED=1；delay()；()LED=0；delay()()LED=1；delay()；

函数定义语句如下：void delay(unsigned char i);以下正确的调用语句是。 A: delay(100) B: delay(260) C: delay(1000) D: delay(20000)

Which of the following expressions mean “延误会有多久” ？ A: What’s the extent of the delay? B: How often is the delay last? C: How long will the delay be? D: When’s the delay?

利用PWM技术控制电机的调速，下面能正常运行的是（ ）。 A: MotorA=0；MotorB=1;delay(80);MotorA=0；MotorB=0;delay(20); B: MotorA=0;delay(400);MotorB=1;delay(400); C: MotorB=0;MotorB=0;delay(80);MotorA=0；MotorB=0;delay(20); D: MotorB=1;MotorB=1;delay(80);MotorA=1；MotorB=1;delay(20);

以下函数申明的方式有错误的是？ A: Int delay( int a); B: Int delay(int ) C: Void delay ();

Word中插入数学公式的方法是（）。 A: "插入"→"形状"→"公式" B: "开发工具"→"公式" C: "插入"→"公式"→"插入新公式" D: "引用"→"插入"→"公式"

stop delay

定义并初始化一个用于存放我们国家的四个直辖市的数组cityName，四个直辖市为：北京，上海，天津，重庆. 正确的是_________ A: String[] cityName=new String[4]{"北京","上海","天津","重庆"}; B: String[] cityName=new String[]{"北京","上海","天津","重庆"}; C: String[] cityName={"北京","上海","天津","重庆"}; D: String cityName = new String[4] { "北京", "上海", "天津", "重庆" };

pp0=0;delay();p1=1；delay（）函数表示延时函数，没有也可以。