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问题 单项选择题

涡流检测线圈中次级绕组的主要作用是（）。

A.在试样中感应出涡流

B.检出涡流的变化

C.在试样中感应出涡流和检出涡流的变化

D.提供直流磁饱和

答案

参考答案：B

单项选择题

图上的(长度)距离和实际的(长度)距离的比为( )。

A．定位线

B．比例

C．标高

D．高程
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单项选择题

A client returns from a myelogram, for which an iodized oil (Pantopaque) was used. Which one of the following nursing measures would be included in his care（）

A. Bed rest with bathroom privileges.

B. Restricted fluid intake.

C. Head of the bed elevated 45 degrees.

D. Assessment of lower extremity movement and sensation.
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