单项选择题
51单片机若晶振为6MHZ，定时/计数器一次最大的定时时间是 。
单项选择题 财务风险从管理角度划分，可分为（ ）
判断题 轮系的传动比是指轮系中首、末两构件的角速度之比。
未知题型 Word Bank presenting attach strengthen etiquette unlucky symbol avoided taboos 7. In the video clip, a gentleman wanted to present his girlfriend with some gifts to __________ their budding relationship.
