【单选题】Water may boil up around the stern of a vessel in a channel due to ().
A.
slack water when upbound
【简答题】导游人员按导游使用的语言分为()导游和()导游。
【单选题】100°C is the temperature _______ which water will boil.
【单选题】100°C is the temperature _____ which water will boil.
【简答题】____ (heat) to 100°C , water
will boil.
【简答题】Reading text: A poster at work
【简答题】按照导游语言分类,导游人员可分为____导游、汉语普通话导游、中国地方语导游、少数民族导游。