告警标准化将网管告警分为四种级别()告警、()告警、()告警和()告警。
参考答案:一级紧急Critical;二级重要Major;三级次要Minor;四级提示Warning
临床酶学测定之前,标本的采集、处理与贮存有哪些注意事项?
—Dad, why should I stop computer games?
—For your health, my boy, I'm afraid you . [ ]
A. to play ; must
B. playing ; have to
C. to play ; can
D. playing ; may