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【简答题】
试比较线粒体DNA、叶绿体DNA和核DNA的异同。
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参考答案:
举一反三
【单选题】editor
A.
作家
B.
编辑
C.
专栏作者
D.
作者
【单选题】关于紫外线消毒居室下列说法正确的是
A.
确保室内没有其他人
B.
将活动紫外线车置于居室某处,将灯管拉起
C.
调节并设置紫外线消毒时间为50分钟,开启开关
D.
关门后房间要上锁,挂警示标志“紫外线消毒中,勿进!”
【多选题】关于紫外线消毒,下列说法正确的是
A.
它可以是固定式的,也可以是活动式的,但距离被照射物不超过 1.2m为宜
B.
紫外线消毒方便实用,但不能彻底灭菌,特别是对细菌的芽孢杀灭效果较差
C.
紫外线对人体有伤害作用,不可直视,更不能在开着的紫外灯光下工作
D.
紫外线可用于所有病原微生物的消毒
【简答题】如图所示,黑客入侵到R4路由器,并设置好LoopBack地址,这样的作用是什么?
【单选题】editor
A.
食物
B.
编辑
C.
葬器
D.
记者
【简答题】河流袭夺的原因有哪两种?
【简答题】如上图。已知 U AB =2V U BC =3V ,求各点电位。 1 A 为参考点 2以 B 为参考点 3以 C 为参考点
【多选题】《Emotional Intelligence》这本书说EQ包含五个意思( )
A.
认识自己的情绪
B.
管理自己的情绪
C.
有效推动自己
D.
认识别人的情绪
【单选题】选出与题干意思相近的选项 Many people may not want to retire early because it would do harm to their mental and emotional well-being.
A.
But even if people are able to economically support a retirement at 65, over thirty years of potential inactivity is harmful to cognitive and emotional vitality. Many people may simply not want to do it.
B.
A multi-stage life will have profound changes not just in how you manage your career, but also in your approach to life. An increasingly important skill will be your ability to deal with change and even welcome it.
C.
In a three-stage life, people leave university at the same time, they tend to start their careers and family at the same age, they proceed through middle management all roughly the same time, and then move into retirement within a few years of each other. In a multi-stage life, you could be an undergraduate at 20, 40, or 60; a manager at 30, 50 or 70; and become an independent producer at any age.
D.
A three-stage life has few transitions, while a multi-stage life has many. That is why being self-aware, investing in broader networks of friends, and being open to new ideas will become even more crucial skills.
【简答题】两段导线AB=BC=0.1 m,在B处连接成60°角.使导线ABC在匀强磁场中匀速运动.已知导线运动的速度v=1.5 m/s,运动方向垂直于AB,如图8-8所示,磁感应强度B=2.5×10-2T.导线上的电势差U=____V,____点的电势高.
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