下列哪种细菌在培养时能产生“汹涌发酵”现象() A.肉毒梭菌 B.产气荚膜梭菌 C. 发布时间:2018-02-07 06:39 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下列哪种细菌在培养时能产生“汹涌发酵”现象()A.肉毒梭菌B.产气荚膜梭菌C.破伤风梭菌D.产黑色素类杆菌E.脆弱类杆菌
题型:单项选择题 已知抛物线S的顶点在坐标原点,焦点在x轴上,△ABC的三个顶点都在抛物线上,且△ABC的重心为抛物线的焦点,若BC所在直线l的方程为4x+y-20=0.(I)求抛物线S的方程;(II)若O是坐标原点,P、Q是抛物线S上的两动点,且满足PO⊥OQ.试说明动直线PQ是否过一个定点. 查看答案
题型:单项选择题 During the assessment stage, a client with schizophrenia leaves his arm in the air after the nurse has taken his blood pressure. His action shows evidence ofA.somatic delusions.B.waxy flexibility.C.neologisms.D.nihilistic delusions. 查看答案