配制0.5mol/LH2SO4溶液时先吸30mL浓硫酸至容量瓶，再加水稀释至1000mL。
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（）在商标注册中有重要的作用，在包括美国在内的普通法国家，不要求正式注册以行使商标权利。
A. 企业范围
B. 企业名称
C. 企业专利
D. 企业规划
LTE采用自组织网络（SON）技术降低网络运营成本及网络复杂度，如网络的自动配置和自动优化功能。
A. 正确
B. 错误
吊钩桥式起重机，主钩起重量20t，副钩起重量5t，跨度19.5m，工作级别A5，室内用，其型号如何表示？
What would NOT require that a detailed report of the release of hazardous cargo be made to the Department of Transportation? （）
A. The valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open sea
B. A carboy of nitric acid is broken on deck while loading and is flushed overboard with no injuryor damage
C. Part of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazard
D. Heavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system
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