影响合成反应的主要因素有()、()、()、()、()、()。
参考答案:温度;压力;空速;入口氨含量;惰性气体含量;氢氮比
A.Giving the kids a more caring environment.
B.Setting up a responsible school system.
C.Taking harsh actions against violence in the school.
D.Keeping the kids under one-to-one surveillance.
判断牙髓活力最可靠的检查方法为()
A.冷热诊
B.叩诊
C.牙髓电活力测验
D.探诊
E.备洞试验