單項選擇題
A.平行 B.30° C.60° D.垂直
A.A級 B.AB級 C.B級 D.C級
A.2% B.3% C.4% D.5%
A.5% B.10% C.15% D.20%
A.1~6 B.2~7 C.3~8 D.4~9
A.1% B.2% C.3% D.4%
A.0.01~10nmB.0.01~0.1nmC.0.001~10nmD.0.001~0.1nm
A.60Co B.192Ir C.103Rn D.238U
A.管電流 B.管電壓 C.靶材厚子序數(shù) D.真空外殼