关于BMW转向系统助力的大小，正确的是（） ["方向盘转角越大，转向助力越大","转向机扭杆变形越大，转向助力越大","车速越高，转向助力越大","发动机转速越高，转向助力越大"]
交通银行增值服务业务的服务次数分配规则支持哪几种分配周期？（） ["一次性","按年","按半年","按季","按月"]
In a fixed displacement axial piston hydraulic motor, the speed is varied by（） ["regulating the ratio between torque and speed via the torque limiter at the motor","directing the motor output flow through a bypass line","maintaining a constant flow and pressure input","controlling the input flow rate"]
In securing deck loads for an ocean tow，drill pipe should be（）. ["galvanized to protect against corrosion","held in place with heavy materials such as spare pendant wire","limited to no more than five courses high","provided with bulwarks at both ends of their bay"]
用于购买新设备所支出的资金或投资的成本，称之为（）。 ["资金成本","设备折旧","机会成本","材料成本"]
发电厂、变电站发生母线失电时应该如何处置？
