根据决策面对的约束条件和随机因素，公司决策可划分为（） ["定性决策","确定型决策","定量决策","风险型决策","不确定型决策"]
根据《蒸汽锅炉安全技术监察规程》的规定：对于额定蒸汽压力小于等于3.8MPa的锅炉，安全阀的流道直径不应小于（）。 ["15mm","20mm","25mm","50mm"]
欧盟在2009年，提出在2013年前斥资1050亿欧元支持及推行“绿色经济计划”。
Which three address ranges are used for internal private address blocks as defined by RFC 1918?（） [" 0.0.0.0 to 255.255.255"," 10.0.0.0 to 10.255.255.255"," 172.16.0.0 to 172.16.255.255"," 172.16.0.0 to 172.31.255.255"," 127.0.0.0. to 127.255.255.255"," 192.168.0.0 to 192.168.255.255"," 224.0.0.0 to 239.255.255.255"]
有齿轮曳引机是由（）等部件组成。 ["电动机；","制动器；","减速器；","曳引轮"]
色性
