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【简答题】
我国《产品质量法》中规定了产品缺陷和产品存在瑕疵两种情形,请分析缺陷与瑕疵之间的关系。
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反馈参考答案：
举一反三
【判断题】Acquired color amblyopia happens when the responsiveness of the rod cell is weakened.
A.
正确
B.
错误
【简答题】Cell phones are common in our lives and have become______．
【简答题】阅读理解。 Cell phones are all around us. We use cell phones to call our friends, send text messages, play s, and even take photographs. Now imagine using your cell phone to call your air conditioner. ...
【单选题】In our eye, rod cells are responsible for ______, while cone cells are responsible for _______.
A.
night vision; moving object
B.
color vision; night vision
C.
night vision; color vision
D.
color vision; moving obsect
【多选题】Why is a rod photoreceptor cell from the retina exquisitely sensitive to light?
A.
The light-absorbing rhodopsin proteins are embedded in many pancake-shaped vesicles (discs) of membrane inside the outer segment of the photoreceptor cell.
B.
When the rod cell is stimulated by light, a signal is relayed from the rhodopsin molecules in the discs, through the cytosol, to ion channels that allow positive ions to flow through the plasma membrane of the outer segment.
C.
These cation channels close in response to the cytosolic signal, producing a change in the membrane potential of the rod cell.
D.
By mechanisms similar to those that control neurotransmitter release in ordinary nerve cells, the change in membrane potential alters the rate of neurotransmitter release from the synaptic region of the cell. Released neurotransmitters then act on retinal nerve cells that pass the signal on to the brain.
【简答题】阅读理解。 Cell phones (移动电话) are all around us. We use cell phones to call our friends, send text messages, play s, and even take photographs. Now imagine using your cell phone to call your air condit...
【单选题】患者,男性,57岁,刺激性呛咳,咳痰,有时带少量血丝。听诊右肺中部有局限性哮鸣音。X线摄片见右肺肺门附近有单侧不规则肿块状阴影,无邻近转移现象。应首先采取的治疗措施是
A.
手术治疗
B.
放射治疗
C.
抗癌药物治疗
D.
免疫治疗
E.
中医中药治疗
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