单项选择题
A.1.4斗口B.1.6斗口C.1.8斗口D.2.2斗口
A.1×1.4×1.4B.1.1×1.4×1.4C.1×1.5×1.5D.1×1.56×1.56
A.12斗口B.13斗口C.14斗口D.15斗口