给风阀的常见故障有哪些？
参考答案：
给风阀过量供给；送风不足或不送风；调整阀座泄漏；调整弹簧折断。
企业税后利润必须先用于提取法定盈余公积金和公益金，然后才能用于还贷。( )
Some great people said it was their primary school teachers and their lessons _____ _____
they were fond of influenced their whole lives.[ ]
A. which; that
B. that; which
C. which; which
D. that; that
