混凝沉淀作为渗滤液处理的关键技术,既可作为前处理技术,又可作为后处理技术。
参考答案:对
28. The presentation, management, and outcome of mental disorder differ between ethnic groups, so experts suggest delivering mental health services for a ______ society.
A.bureaucratic
B.diverse
C.conventional
D.Primitive
鸡舍光照过强可能会引起()。
A、啄肛
B、啄羽
C、互相残食
D、神经质