[名词解释] 斗渠
[名词解释] root canal
[名词解释] 股管femoral canal
[名词解释] 侧向侵蚀(lateral erosion)
[试题](iii) Lateral or horizontal. (3 marks)
[单选题]Vessels transiting the Canal must have their gangways and derricks ________A.readjustedB.removedC.loweredD.rigged in