A.胸骨右缘第四肋间
B.胸骨左缘第四肋间
C.左锁骨中线与第五肋间相交点
D.
E.左腋中线第五肋间水平
[单选题]A.共晶B.共析C.包晶
[单选题]A.共晶B.共析C.包晶
[单选题]A.1/4B.1/3C.2/3D.1/5E.1/2
[单选题]A.0B.C.D.E.-2
[单选题]A.0B.C.D.E.-2
[单选题]A.2x-2yB.2xdx-2ydyC.D.
[单选题]A.2x-2yB.2xdx-2ydyC.D.
[单选题]A.2x-2yB.2xdx-2ydyC.D.