单项选择题

线性渐变的渐变角度to top相当于（）度。
A、0
B、90
C、180
D、270

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单项选择题

The concept of postponement strategy

A．involves two organizations working together to delay delivery
B．Involves strategic delay of the delivery
C．Seeks to reduce the risk of delivery
D．Seeks to reduce the risk of forecast

单项选择题

能力主要受到先天的母亲的基因的影响。
A、正确
B、错误