工程项目管理难度最大的阶段是工程项目的( )。
Goods are carried by several of transport--on road or rail, by sea or air.
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
依照《注册安全工程师管理规定》,注册安全工程师实行分类注册,类别包括煤矿安全、非煤矿矿山安全、危险化学品安全、( )和其他安全类。
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