C.二常开二常闭                                               D.无数对

8.三菱的FX2N系列PLC中100ms定时器编号范围是

A.T0~T199                                                       B.T0~T245    

C.T0~T249                                                        D.T0~T255

9.三菱的FX2N系列PLC中C199计数器属于_____计数器。

A.16位通用加法                                             B.16位掉电保持

C.32位通用双向                                             D.32位掉电保持

10.三菱的FX2N系列PLC的上升沿微分指令是

A.MRD                                                              B.RST

C.PLS                                                                 D.PLF

11.FX2N系列PLC提供一个100ms时钟脉冲的是

A.M8010                                                           B.M8011

C.M8012                                                           D.M8013

12._____是在传送、比较等指令中用来改变操作数的地址。

A.Y输出继电器                                               B.M辅助继电器

C.Z变址寄存器                                               D.S状态继电器

13.下列指令使用正确的是

A.RST  S0  S24                                            B.OUT  T0  K35

C.SET  X0                                                       D.MOV  D20  K10

14.CA6140普通车床主轴正反转由操作手柄通过双向多片摩擦离合器控制，摩擦离合器还可起到_____作用。

A.欠电压保护                 &nb