【简答题】(1)混有泥沙的食盐,可依次进行______,______,______三步实验操作即可达到分离提纯的目的.(填实验操作名称,下同) (2)现有三组实验:①除去混在植物油中的水 ②将海水制成淡水 ③用食用酒精浸泡中草药提取其中的有效成份.上述分离方法依次是______,______,______.
【单选题】关于肾肿瘤超声诊断,哪一项是不正确的?( )
【单选题】How can a Ezonexam administrator determine if a router has been configured when it is first powered up?
A.
A configured router prompts for a password
B.
A configured router goes to the privileged mode prompt
C.
An un configured router goes into the setup dialog
D.
An un configured router goes to the enable mode prompt
【简答题】TDLTE无线掉线率的统计公式是___。