单项选择题
So far as___interest is concerned, D/P at sight is more favorable than D/P after sight, and D/P is more favorable than D/ exporter's
B、the importer's
C、the consumer's
D、the government's
A、the
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单项选择题
命令()表示多项式相乘
A.v
C:uv
D:conv(u,v)
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单项选择题
定义符号变量正确的为()。
A:symsxyz
B:x=symx
C:x=sym‘x’
D:symsx,y,z
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