题目内容

在MRI设备中，关于主磁体价值的描述，哪项错误（)

A. 直接关系到磁场强度
B. 直接关系到磁场均匀度
C. 直接关系到磁场稳定性
D. 不影响MRI图像质量
E. 用以说明MRI设备类型

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In order to solve the pollution problems that began from the mid-20th century, a number of environmental protection organizations have formed. However, the most important pollution fighter is perhaps each individual person. If everyone makes the effort, pollution can be greatly reduced,
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