变酸的酒的表面观察到的菌膜是什么菌在液面大量繁殖形成的_刷题宝

题干

变酸的酒的表面观察到的菌膜是什么菌在液面大量繁殖形成的

A：酵母菌

B：醋酸菌

C：毛霉菌

D：乳酸菌

上一题下一题 0.0难度选择题更新时间:2020-01-22 04:46:18

答案(点此获取答案解析）

B

同类题1

Dear Mr. Wise,
I'm a slow student. Most of my classmates are much better than me, so I usually get stressed out. Although I spend much time studying for the tests, I can't get good grades. Sometimes my father gives me some help. He tells me not to worry about it, but it doesn't work. What do you think I should do?
Li Lei

Dear Li Lei,
Many famous people were not so good when they were young. Edison, a famous scientist, did poorly in his studies when he was a young boy. But, as an adult, he made many inventions that helped a lot of people. When I was at young age, I didn't do well at school. I just kept working hard, and at last, I succeed. You should take it easy and try your best. Tomorrow is another day. I believe you can do better.
Mr. Wise

同类题2

2016年3月22日，被誉为“歼-10之父”的宋文骢院士因病去世。宋文骢数年如一日地忘我工作，为祖国的航空事业鞠躬尽瘁，他用自己的这一实际行动（）

①不断延伸了自己生命的价值 ②正确处理了个人与集体的关系

③发扬了艰苦奋斗的优良作风 ④展现出良好的竞争与合作品质

同类题3

如图，同一平面内的a,b,c,d四点处于匀强电场中，电场方向与此平面平行，M为a,c连线的中点，N为b,d连线的中点。一电荷量为q（q>0）的粒子从a点移动到b点，其电势能减小

W_{1}

;若该粒子从c点移动到d点，其电势能减小

W_{2}

。下列说法正确的是（）

同类题4

下列天气符号表示雷雨的是（）

同类题5

核糖体中合成的蛋白质类物质不可能具有的功能是（）

小学学科试题库

初中学科试题库

高中学科试题库