企业因借款而增加的风险称为（） ["经营风险","财务风险","市场风险","筹资风险"]
Among the basic categories of equipment, which of the following are used to allow the hydraulic energy to be controlled?（） ["hydraulic pumps","valves","hydraulic cylinders","hydraulic motor"]
动态分配IP地址后IP地址的利用率（）。 ["降低","提高","不变","降至最低"]
下列选项中，（）不属于流媒体数据流的特点。 ["交互性","实时性","连续性","时序性"]
下列生态系统中，生产力最低的是（）。 ["海岸红树林生态系统","沙漠生态系统","热带雨林生态系统","温带阔叶林生态系统"]
简述怎样测量炭化室底部压力？
