题目内容

下列关于在无效宣告请求的审查过程中修改专利文件的说法哪些是正确的？（）

A. 发明专利的专利权人既可以修改权利要求书，也可以修改说明书
B. 实用新型专利的专利权人仅可以修改权利要求书
C. 外观设计专利的专利权人仅可以修改图片或者照片
D. 发明专利的专利权人在修改权利要求时，不得改变原权利要求的主题名称

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设备基础定位放线可依据（）图和有关建筑物的轴线、边沿线及标高线，划定安装基准线。

A. 设备布置
B. 工艺流程
C. 设备装配
D. 土建施工

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在测量中，如果兆欧表的指针指到（）位置，表明被测电气设备的绝缘一定不正常。

A. “0”
B. “∞”
C. 中间
D. 接近于“∞&rdquo

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When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）

A. The diesel oil must never be allowed to mix with the heavy fuel
B. The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valve
C. The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valve
D. The heating steam must be secured before the diesel oil passes through the three-way valve

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Day-shapes must be displayed（）.

A. Between sunset and sunrise
B. Only between 8 AM and 4 PM
C. During daylight hours in any visibility
During daylight hours in unrestricted visibility only

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