【单选题】51单片机8031片内EPROM有( )。
【单选题】–Do you have a tennis racket? - .
【单选题】– Do you have iPhone 5? – Sorry, they have been .
【单选题】– Do you have any plans for your winter vacation? – Yes. I am ________ for Paris next month.
【单选题】– Do you have any plans for this Sunday? – Yes, I _______ my grandparents.
【多选题】滚珠丝杠螺母副与普通滑动丝杠螺母副相比,特点有( )。
【单选题】– do you have an English Party? – Once a month.