【简答题】A.They scare whales to death. B.They produce too much noise. C.They discharge toxic emissions. D.They ener lots of water life.
【单选题】下列关于暖流分布的叙述,错误的是 ( )
【单选题】如图所示小轴零件,毛坯为普通精度的热轧圆钢,批量生产,其外圆表面的加工路线为粗车—精车—磨削,则其磨削工序的经济精度为( )
【判断题】g = lambda x: 3不是一个合法的赋值表达式。
【简答题】用方框中所给词组的适当形式填空。 go off; take place; take away; compared to; depend on 1. Don't _______ your parents all the time. You should work by yourself. 2. Huanghe Road is quite busy _______ Jiaozhou Road. ...