【多选题】What do Chinese people often do in Yuanxiao Festival?
A.
Appreciating lantern exhibits.
B.
Solving riddles written on lanterns.
【判断题】Chinese people often use knives and forks to have Chinese dinner.
【单选题】在以下整型常量的表示方法中,不正确的是________ 。
【判断题】顺序控制系统大致分成三级控制,分别为:机组级控制,功能组控制和设备级控制。