苏云金杆菌的芽孢能通过害虫破损的消化道进入血液,在血液中苏云金杆菌得以大量繁殖, 发布时间:2017-05-04 17:34 │ 来源:www.tikuol.com 题型:选择题 问题: 苏云金杆菌的芽孢能通过害虫破损的消化道进入血液,在血液中苏云金杆菌得以大量繁殖,使害虫死亡。苏云金杆菌的芽孢属于( )A.荚膜B.休眠体C.生殖细胞D.色素体
题型:选择题 Questions 9-13 ·You will hearfive people giving reasons why children learn their mother tongue so well. ·Before you listen, read the list of statements, five of which are summaries of what they were saying. ·Then listen carefully and match the statements (A-F) with the people who said them (9-13) respectively. ·There is one extra statement that you don’t need to use. You will hear the passage twice. 9. Maggie: ______A. The time of their learning the mother tongue is the most favorable of all. 10. Cherry: ______B. Children hear their native language spoken always in its genuine form. 11. Mike: ______C. Children have private lessons all the time to learn their mother tongue. 12. Hazel: ______D. Children hear their native language spoken in all possible situations. 13. Jody: ______E. Children have special teachers to teach them.F. Children have flexible organs and sensitive ear. 查看答案
题型:选择题 下列关于浓缩红细胞错误的是()A.浓缩红细胞提供携氧能力,靠适当的血容量和心脏功能来维持氧的输送B.红细胞压积低于30%或血红蛋白100g/L不再作为输血指征C.很多慢性病患者能耐受70~80g/L或低于此水平的血红蛋白浓度D.在有明显心肺疾患,尤其是冠状动脉疾病的患者,增加心输出量可造成心肌缺血E.体重70kg的成人,每单位浓缩红细胞通常可使红细胞压积提高3%~5% 查看答案