【单选题】Each person's fingerprint is unique, ________ it an ideal identification tool. [ ]
【单选题】Each person's fingerprints are ___________.
【简答题】在进行框架结构设计时,梁截面高度可初步选为 ______ ,且高宽比满足于 _____ 。
【简答题】Each person's signature is _____.
【单选题】关于初乳的特点错误的是
B.
初乳含蛋白质、矿物质、脂肪比成熟乳多,故较稠。
【简答题】Each person’s fingerprints are _____.
【单选题】In 1900, the world's use of paper was about ______ for each person in a year.