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问题 多项选择题

根据危险化学品的易燃、易爆、有毒、腐蚀等危险特性，确定危险化学品事故的类型分6类，危险化学品火灾事故、危险化学品爆炸事故、危险化学品中毒和窒息事故、（）。

A、危险化学品灼伤事故 

B、危险化学品泄漏事故 

C、其他危险化学品事故 

D、矿山爆破事故

答案

参考答案：A, B, C

单项选择题

In roiling wave planning:

A．Focus is maintained on long-term objectives, allowing near-term objectives to he roiled out as part of the ongoing wave of activitie

B．The work to be accomplished in the near term is planned in detail at a low level of the WB

C．The work far in the future is planned in detail for WBS components that are at a low level of the WB

D．A wave of detailed activities is planned during strategic planning to ensure that project milestones are achieve
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单项选择题

反映一组正态分布计量资料离散趋势的指标是

A．变异系数
B．标准误
C．标准差
D．均数
E．全距
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