【判断题】( )106.47.69.71是一个C类IP地址
【单选题】In Thoreau's opinion, the price of a thing should be measured in terms of ______.
【单选题】Travelling at high speed means_______
A.
people' s focus on the future
C.
satisfying drivers'great thrill
【多选题】根据矿物物拉结晶的完整程度,晶粒形态可分为( )。
【单选题】不属于机械制造行业常用的检测仪器是( )