多项选择题

海洋深度测量从技术上分为（）。

A．直接测深
B．声学测深
C．重力测深
D．压力测深

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多项选择题

以下肾脏切片中哪些是玻璃样变？

A．A
B．B
C．C
D．D

单项选择题

When computer was invented and began to be widely used, MOUSE quickly ______ its meaning to refer to one of the devices in computer. ()

A．extended
B．narrowed
C．elevated
D．degraded