题目：
关于菌毛的叙述，错误的是（）。
A.多见于革兰阴性菌
B.有普通菌毛与性菌毛
C.在光学显微镜下看不到
D.是细菌的运动器官
E.普通菌毛与细菌的致病力有关
答案：
参考答案：D
解析：细菌的运动器官是鞭毛。
关于菌毛的叙述，错误的是（）。 A.多见于革兰阴性菌 B.有普通菌毛与性菌毛 C.在
来源：www.tikuol.com
题型：单项选择题 A1/A2型题
试题推荐
题型：单项选择题
健全的人格不包括以下哪方面内容（）。
A.气质
B.能力
C.性格
D.态度
题型：填空题
实现数据库操作的DAO技术，其模型采用的是层次结构，其中处于最顶层的对象是______。
题型：选择题
下列物质露置于空气中，质量不变的是（ ）
A．石灰水
B．石灰石
C．浓盐酸
D．浓硫酸
题型：完形填空
Tears slid down Ken's cheeks. Their newbom baby was removed from life supprt, taken back to her and her , Charlie. who held their baby. Austin was bom at 12:17 p.m. three months than he should have been. The length of a school ruler. he weighed one pound. nine ounces. Doctors tried that technology and medicine could offer at the baby, but Austin did not respond well. Austin's lung tissue (组织) had probably developing four weeks before. even still . his mother, because of an accident Zero chance of . It was time to let him go, and let him leave in his mother's arms － at peace and in no pain. In the next few hours, Charlie's parents, and Ken's mother came to meet and say Austin. Charlie and Keri their eyes on the baby as he snuggled(依偎) into Keri's chest. The end, they believed. was coming . Nurse Melissa walked in every so often to check Austin's . If it was time for him t0 . his heart rate would begin to slow. After four hours, , Austin was still breathing. His heart thumped(跳动) at a healthy 120 beats per . He moved his head and wrapped his fingers and toes around the fingers of his . Four hours became five, then six. Austin and his parents remained still . Word about this baby had spread out. Everyone was talking about him. As the minutes and hours ticked away, Austin was going strong The tests showed a(n) level of carbon dioxide in his blood. which meant he was enough oxygen into his body. The clock passed midnight. Austin had the next day. Miracle. a life miracle!
|
题型：多项选择题
在太阳的活动现象中，主要标志有（）
A.黑子
B.耀斑
C.光斑
D.日日耳
