血吸虫哪一阶段幼虫能感染人畜() A.童虫 B.毛蚴 C.母细蚴 D.子胞蚴 E.尾 发布时间:2017-05-05 20:12 │ 来源:www.tikuol.com 题型:单项选择题 A1型题 问题: 血吸虫哪一阶段幼虫能感染人畜()A.童虫B.毛蚴C.母细蚴D.子胞蚴E.尾蚴
题型:单项选择题 A1型题 -I have tried very hard to find a solution to the problem, but in vain. -Why not consult with Frank? You see, ________.[ ]A.great minds think alike B.two heads are better than oneC.a bird in the hand is worth two in the bushD.it's better to think twice before doing something 查看答案
题型:单项选择题 A1型题 已知:碳12原子的质量为1.993×10﹣26kg,一个M原子的质量6.64×10﹣26kg,则相对原子质量的标准是 _________ kg,M原子的相对原子质量为_________. 查看答案