【简答题】避障机器人常用的传感器是 __ ____ 。
【单选题】听力原文:(A) The woman is taking something out from the machine. (B) The machine is out of order. (C) The woman is being ticketed for speeding. (D) The woman is in the bus terminal.
【简答题】In order not to get into trouble, advertisers are increasingly cautious about taking out ads ______(aim) at children.
【单选题】测定 Cl 离子时,其离子强度可以用
D.
采用 0.1mol ∕ LHAc-NaAc 缓冲液控制
【单选题】Chinese customs regulations () taking precious works of art out of China.
【单选题】Advertisers are increasingly cautious about taking out ads _______ children, and that is hurting children’s magazines.