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流水线的生产能力取决于每道工序设备的生产能力,所以,计算工作从()开始。

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中国法定计量单位由法定长度、质量、力(压力、力矩)、摄氏温度等构成。()

A. 正确
B. 错误

()是验证信息发送者是真的,而不是冒充的,包括信源、信宿等的认证和识别。

You are on a containership carrying a tank container that had been filled with sodium hydroxide solution. The container is empty but has not been cleaned. Which,if any,placard is required?().

A. No placard is required; the tank openings must be sealed
B. Empty placard with corrosive placard
C. Residue label with the UN number
D. Black and white corrosive placard

拟态(mimicry)的含意是:()

A. 昆虫身体表面的微型感觉毛
B. 某些种类的昆虫通过模拟其他种类的昆虫而得到特殊的保护
C. 在预示着危险的外界刺激的影响下某些昆虫所处的状态
D. 一些昆虫雌虫的行为,此行为意在吸引雄虫

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