A "call" option gives General Motors the right to sell pounds at a specified price, while a put option gives General Motors the right to buy pounds at a specified price.

PLC系统的通信网络主要形式有4种，但是没有专用PLC网络。 ...

判断题PLC系统的通信网络主要形式有4种，但是没有专用PLC网络。
正确
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下海湾的主要葡萄品种是( )A．Albarino阿尔巴利诺 B．Verdejo弗德乔 C．Sauvigno...

单项选择题下海湾的主要葡萄品种是( )

Transcendentalists place emphasis on the importance of ...

判断题Transcendentalists place emphasis on the importance of the oversoul, the individual and Nature. The most important representatives are Ralph Waldo Emerson and Henry David Thoreau.