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【单选题】
当氢质子进入静磁场后,下列情况正确的是A.
氢质子磁化矢量都平行于主磁场且方向相同
B.
氢质子磁化矢量都平行于主磁场且方向相反
C.
氢质子磁化矢量都平行于主磁场且低能级质子与主磁场方向相同
D.
氢质子磁化矢量都平行于主磁场且高能级质子与主磁场方向相同
E.
氢质子磁化矢量不受主磁场影响
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