良好的ELISA板应该是（）。A、吸附性能好 B、空白值低 C、孔底透明度高 D、各 发布时间：2017-11-14 02:17 │ 来源：www.tikuol.com 题型：多项选择题 问题： 良好的ELISA板应该是（）。A、吸附性能好B、空白值低C、孔底透明度高D、各板之间和同一板孔之间性能相近
题型：多项选择题 完形填空。 What do you think of doing chores? In fact, very l people like doing chores around the house. 2 , we all know that people must do them. Kids who live 3 Washington have chores to do to 4 their family every day. The chores are different _ 5 kids. Parents often show them 6 to do different chores. It is good for parents to 7 their children to do chores at 8 early age. Many parents think chores are 9 for children-even very young ones. Children 10 many important skills to do chores. The skills will be good for children in their lives.( ) 1. A. many ( ) 2. A. However ( ) 3. A. on ( ) 4. A. do ( ) 5. A. for ( ) 6. A. what ( ) 7. A. make ( ) 8. A. a ( ) 9. A. important( ) 10. A. make B. much B. So B. with B. help B. of B. how B. keep B. the B. boring B. need C. littleC. For C. for C. hold C. in C. that C. teach C. an C. tired C. do D. few D. Until D. in D. save D. from D. which D. let D. / D. free D. call 查看答案
题型：多项选择题 下列叙述中哪一项是正确的()A．早期胃癌病人往往无明显症状B．残胃癌是指胃癌手术5年后发生的胃癌C．胃癌根治术要求切缘距癌边缘10cm以上D．目前国内早期胃癌占胃癌住院病人的比例超过30%E．胃癌的好发部位依次是贲门、胃底、胃窦、胃大弯 查看答案