【多选题】导游讲解的鲜明性主要表现在涉及人、事、物时要( )。
【单选题】Which position does mention that computer skill is not needed?
【简答题】Computer criminals that police find difficult to catch are mostly______.
【简答题】About one million Americans are diagnosed annually with skin cancer.
【简答题】在冲压过程中,需要最小变形力区是个相对的弱区,而且弱区必先变形,因此变形区应为( )。
【简答题】A.Stomach cancer. B.Skin cancer. C.Lung cancer. D.Blood cancer.
【单选题】About one million Americans are diagnosed annually with skin cancer.
【判断题】累加器A和累加器B唯一的区别是:累加器B的高位字可以用作乘法器的一个输入,而累加器A则不能。