Say something about the three immigration waves.
Belfast Lough and Lough Neagh lie in（）
样地
What do you know about the English Renaissance?
职业道德不是（）的重要条件。 ["增强人员之间凝聚力","提高人员之间竞争力","提高人员工作效率","从业人员事业成功"]
解释质量输运限制CVD工艺和反应速度限制CVD工艺的区别，哪种工艺依赖于温度，LPCVD和APCVD各属于哪种类型？
