【单选题】在微型计算机中,断电后信息会丢失的存储器是()
【多选题】下列属于 C 语言中数据类型关键字的是( )
【单选题】If you are traveling in Australia. take _________of the duty-free goods available at our store in the Sydney Airport.
【判断题】PN结正向偏置时电阻小,反向偏置时电阻大
【单选题】Please be advised that every night shift worker is eligible for free parking ______on duty.