【单选题】The amino acid sequence of cytochrome c is exactly the same in humans and chimpanzees. There is a difference of 13 amino acids between the cytochrome c of humans and dogs, and a difference of 20 amino...
A.
Rattlesnakes apparently gave rise evolutionarily to the dog, chimpanzee, and human.
B.
Cytochrome c apparently has an entirely different function in rattlesnakes than in mammals, which explains the difference in the number of amino acids.
C.
Cytochrome c from a rattlesnake could function in a dog, but not in a chimpanzee.
D.
The human is apparently more closely related to the chimpanzee than to the dog or rattlesnake.
【判断题】乙酰苯胺重结晶热过滤时,产品是固体,滤液可以弃去。
【单选题】蛋白质的三级结构是由蛋白质的( )决定的
【单选题】有关轻微疾病的处理,下列说法错误的是( )。
B.
经机长同意,了解接近病人两到三名乘客的姓名和家庭住址
D.
根据乘客的意见决定着陆后是否需要医务方面的处理
【单选题】习近平还讲:“择其善者而从之,其不善者而去之。”继承积极思想,摒弃消极思想,实现中华文化( )转化和创新性发展。
【简答题】药品这种特殊商品的特殊性主要表现在哪些方面?
【单选题】下列选项中,关于敏感度系数的叙述正确的是( )。
A.
敏感度系数高,表示项目效益对该不确定因素敏感程度高
B.
敏感度系数低,表示项目效益对该不确定因素敏感程度高
D.
敏感度系数大于0,表示评价指标与不确定因素反方向变化
【多选题】主变电所指的是由上一级供电区域获得高压( )电能。