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搜题
【单选题】
指出下列非电解质溶液A.
0.9%氯化钠
B.
5%葡萄糖液
C.
1.4%碳酸氢钠
D.
复方氯化钠溶液
E.
4︰3︰2 溶液
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】电磁波:随时间变化的运动电荷和()电磁场,电磁场在空间互相激发,在空间以波动的形式存在,这就是电磁波。
【判断题】电磁辐射是一种复合的电磁波，以相互垂直的电场和磁场随时间的变化而传递能量。人体生命活动包含一系列的生物电活动，这些生物电对环境的电磁波非常敏感，因此，电磁辐射可以对人体造成影响和损害。()
A.
正确
B.
错误
【单选题】Paragraph 4_____________
A.
How common is depression in later life?
B.
What is depression?
C.
What relieves depression in older people?
D.
Why does depression in older people often go untreated?
E.
Can depression in older people be treated?
F.
What are the consequences of untreated depression in older people?
【单选题】下列关于电磁波的说法，正确的是
A.
电磁波只能在真空中传播
B.
电场随时间变化时一定产生电磁波
C.
做变速运动的电荷会在空间产生电磁波
D.
麦克斯韦第一次用实验证实了电磁波的存在
【单选题】Paragraph 2_____________
A.
How common is depression in later life?
B.
What is depression?
C.
What relieves depression in older people?
D.
Why does depression in older people often go untreated?
E.
Can depression in older people be treated?
F.
What are the consequences of untreated depression in older people?
【单选题】Paragraph 1_____________
A.
How common is depression in later life?
B.
What is depression?
C.
What relieves depression in older people?
D.
Why does depression in older people often go untreated?
E.
Can depression in older people be treated?
F.
What are the consequences of untreated depression in older people?
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