被丝绸摩擦过的玻璃棒带上正电荷,这是因为: [ ] A.有原子核发生了转移 B. 发布时间:2017-08-06 15:13 │ 来源:www.tikuol.com 题型:选择题 问题: 被丝绸摩擦过的玻璃棒带上正电荷,这是因为: [ ]A.有原子核发生了转移 B.有电子发生了转移 C.摩擦创造了正电荷 D.摩擦创造了负电荷
题型:选择题 食道癌晚期患者,术后1年肿瘤复发,并发生肺门及颈淋巴结转移,经治疗无效死亡。该肿瘤的中晚期与早期的区别在于()。A.早期癌仅侵及固有层B.早期癌仅侵及黏膜肌层C.早期癌局限在黏膜层或黏膜下层,不侵及肌层D.早期癌可侵及肌层E.只要没有淋巴结转移者就是早期胃癌 查看答案
题型:选择题 根据首字母及所给汉语注释和句子意思。51. I can’t understand what you said. Would you please make it much s______ ?52. At the end of the letter, he sent his best r______to my parents. 53. The rising sun is______(特别的)beautiful to look at from here. 54. He didn’t show his anger by______(控制)himself. 55. Which do you think is the greatest______(发明)in the last century? 查看答案