【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】About one million Americans are diagnosed annually with skin cancer.
【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。
【判断题】累加器主要作用是完成程序运行过程中的累加操作。( )
【多选题】People with fair skin who sunburn easily are very ( ) ( ) develop skin cancer.