A.3°~6°ms B.6°~2°ms C.12°~18°ms D.18°~24°ms E.13°~16°ms
A.磁體系統(tǒng) B.高壓發(fā)生系統(tǒng) C.梯度系統(tǒng) D.射頻系統(tǒng) E.計算機及數(shù)據(jù)處理系統(tǒng)
A.a<9° B.9°-9° C.9°-18° D.18°-9°-18° E.9°-18°-18°