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【单选题】

()involves passing visible light transmitted through or reflected from the sample, through a single or multiple lenses to allow a magnified view of a sample.

A.
Optical microscopy
B.
Digital microscopy
C.
Scanning electron microscopy
D.
Transmission electron microscopy
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参考答案:
参考解析:
.
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【单选题】对于样式规则background:linear-gradient(toright,red50%,green50%);错误的是()

A.
背景是线性渐变
B.
线性渐变的颜色从红色过渡到绿色
C.
红色和绿色之间没有过渡
D.
红色和绿色各占50%