肝右叶棘球幼病：（）
A.定期B超复查观察
B.内囊摘除术
C.肝动脉结扎术
D.射频消融治疗
E.肝部分切除芳
参考答案：B
常温时，蜡式节温器石蜡呈固态，弹簧将主阀门推向上方，使之压在阀座上，主阀门（）。
A.全开
B.开启1/2
C.开启1/3
D.关闭
When he ____home,he saw his mother cleaning the room.[ ]
A. gets back
B. got back
C. had got back
D. has got back
