【单选题】陆生动物排出含氮废物有不同的方式,以减少水分的丧失,鸟类排出的含氮废物是()。
【单选题】According to the professor, what is the greatest advantage of hydroponics?
A.
The plants are less likely to develop soil-borne diseases.
B.
The cultivation requires much less labor than traditional methods.
C.
The water can be recycled in a hydroponic environment.
D.
Less space is needed to produce a large number of plants.
【简答题】What is the greatest positive integer x such that 2x is a factor of 1210?
【多选题】管理者在绩效辅导过程中所扮演的“教练”角色的任务包括( )。
【单选题】The sum of n different positive integers is less than 100. What is the greatest possible value of n?