某孕妇为Rh-,第一胎分娩Rh+胎儿,为防止再次妊娠的Rh+胎儿产生溶血症,应给Rh 发布时间:2017-06-13 18:57 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某孕妇为Rh-,第一胎分娩Rh+胎儿,为防止再次妊娠的Rh+胎儿产生溶血症,应给Rh-母亲注射A.抗Rh因子抗体B.Rh抗原C.免疫抑制剂D.免疫增强剂 E.以上都不是
题型:单项选择题 完形填空。 Li Ming and Joan_ 1 my good 2 . Li Ming 3 from Englandand Joan is 4 China. We 5 in the same 6 and the 7 class. Li Ming 8 singing and Joan likes singing, _ 9 _ We all 10 very hard.( ) 1. A.is ( ) 2. A. friend ( ) 3. A.is ( ) 4. A. to ( ) 5. A. are ( ) 6. A. school ( ) 7. A. some ( ) 8. A.like ( ) 9. A. also ( ) 10. A. work B. am B. friends B. are B. come B. do B. classes B. same B. likes B. too B. works C. are C. friendes C. does C. from C. be C. grades C. different C. likes to C. well C. working 查看答案
题型:单项选择题 在下列反应中:A.2F2+2H2O=4HF+O2 B.2Na+2H2O=2NaOH+H2↑C.CaO+H2O=Ca(OH)2 D.2H2O 电解 . 2H2↑+O2↑水只作氧化剂的是______,水只作还原剂的是______,水既作氧化剂又作还原剂的是______,水既不作氧化剂又不作还原剂的是______. 查看答案
题型:单项选择题 假设一条自动生产线生产的产品是合格品的概率为0.8,要使一批产品的合格率在76%与84%之间的概率不小于90%,这批产品至少要生产的件数为()。(φ(l.64)=0.95,其中φ(x)是标准正态分布函数)A.267B.268C.269D.270E.271 查看答案