单项选择题 Which of the expression is suitable for expressing respect in handshakes? A、It is an honor to meet you. B、I am proud of you. C、Please take care of yourself. D、I’m grateful for your help

未知题型 云计算的部署模式有：________。

多项选择题 8、关于生产工艺技术方案比选的说法，正确的有（ ）。