A.单叶双曲面B.双曲柱面C.双曲柱面在平面x=0上投影D.x=-3平面上双曲线-找考题网

单项选择题

A.单叶双曲面
B.双曲柱面
C.双曲柱面在平面x=0上投影
D.x=-3平面上双曲线

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单项选择题

A.见图AB.见图BC.见图CD.见图D

A.见图A
B.见图B
C.见图C
D.见图D

判断题

The main umami compounds in tea infusion are glutamate and aspartic acid, and their concentrations are similar, so their contribution to the umami taste of tea infusion is similar. ( )

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