【简答题】What languages has Modern English derived from?
【简答题】某传动轴,转速n=300r/min,轮1为主动轮,输入功率P 1 =50kW。轮2、轮3与轮4为从动轮,输出功率分别为P 2 =10kW,P 3 =P 4 =20kW。
【判断题】D5 : 一个样品的累计粒度分布百分数达到 5% 时所对应的粒径, 通常用来衡量样品粗端的颗粒指标。
【简答题】What languages do people speak in thesecountries?
【多选题】What languages do people in Scotland speak?
【单选题】What languages does German belong to ?
D.
Indo-Iranian languages
【单选题】What languages do people speak these countries?
【单选题】What languages does English belong to ?