题目内容

Many customers like to have chicken.

A. 对
B. 错

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The man orders a sweet and sour fish.

A. 对
B. 错

He also asks for shrimp fried rice.

A. 对
B. 错

He wants to drink iced tea after the meal.

A. 对
B. 错

可编程序控制器的输入／输出响应速度受( )影响较大。A、器件性能 B、扫描周期 C、程序 D、外接设备

A. 器件性能
B. 扫描周期
C. 程序
D. 外接设备