诉诸无知是一种逻辑谬误。人们断定一件事物是正确的，只是因为它未被证明是错误；或断定一件事物是错误的，只是因为它未被证明是正确，都属于诉诸无知。根据上述定义，下列选项属于诉诸无知的是（ ）。

根据零件不同的功能要求，给出不同的几何公差项目。为保证机床工作台或刀架运动轨迹的精度，要对机床导轨给出直线度公...

单项选择题根据零件不同的功能要求，给出不同的几何公差项目。为保证机床工作台或刀架运动轨迹的精度，要对机床导轨给出直线度公差要求。
A、正确
B、错误

What is the logical order of the following paragraph? T...

单项选择题What is the logical order of the following paragraph?
The cloning of Dolly involved several steps. First, cells that had previously been taken from Dolly’s mother were starved for five days, which caused them to stop dividing. This interruption of the cells’ division cycle made it easier for them to reprogram themselves to start growing a new organism. After five days, the nuclei of these cells were removed and transferred into an unfertilized sheep egg, from which the natural nucleus had previously been removed. In the next step, the egg was grown in the laboratory for a period of time. Then the egg was implanted into a different sheep, where it grew normally. When the sheep finally gave birth, the lamb was an exact genetic copy, or clone, of the sheep that had provided the transferred nucleus, not of the sheep that had provided the egg.

翻转课堂让老师更密切地联系学生，能更多地指导学生实践。 A、正确 B、错误

单项选择题翻转课堂让老师更密切地联系学生，能更多地指导学生实践。
A、正确
B、错误