薄层扫描需具备的条件是()。
A.梯度磁场场强高
B.梯度磁场场强低
C.射频带宽要宽
D.射频编码大的步码数
E.相位编码大的步码数
参考答案:A
. --- My teacher told me just now that I passed the test!
--- ______.
A.Go ahead
B.At your pleasure
C.I’m so glad for you
D.with pleasure
A.时刻t线圈中电流的瞬时值icosωt
B.线圈中电流的有效值I
C.线圈中电流的有效值I=
D.线圈消耗的电功率P