Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed （）.

A . they must be located at the after end of the engine B . they can only be used with one engine at a time C . they eliminate the need for controllable pitch propellers D . they are connected to the engine with a flexible coupling

A . the propeller diameter B . the propeller radius C . the pitch angle D . the length of helix

A . for FP, once fitted, the position of the blades can also be changed in operation B . for CP, once fitted, the position of the blades can also be changed in operation C . the CP type has a relatively smaller hub compared with the FP propellers D . the FP type has a relatively larger hub compared with the CP propeller

A . 浆距角 B . 倾角 C . 安装角 D . 偏航角

A . 表示变桨速度超限，超过了限定值14°/s B . 第一步检查旋转编码器的插头及插头处的屏蔽层连接 C . 第二步检查旋转编码器信号线到变桨柜出的哈丁插头的屏蔽层的连接 D . 第三步检查X3端子排上的接线及KL5001上的接线；E.第四步以上检查都良好，那么建议更换旋转编码器

A . angle that the propeller makes with a free stream of water B . angle that the propeller makes with the surface of the water C . number of feet per revolution the propeller is designed to advance in still water without slip D . positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without sli

A . 正确 B . 错误

A . 29 B . 77 C . 101 D . 70

A . must churn the oil in the sump B . is connected to the propeller shaft C . is driven at the highest RPM D . compensates for alignment variations between the engine and pinion gear

A . alternator B . turbo-charger C . remote controller D . windla

A . 正确 B . 错误

A . When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may result B . When going directly from full ahead to full astern，there is complete steering control C . When the vessel has headway and the propeller is in neutral，there is no effect on rudder control D . When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM

A . Slightly higher fuel consumption B . Lack of directional control when backing C . Inefficient at high shaft RPM D . Some unusual handling characteristic

A . Ⅰ + Ⅱ B . Ⅰ ~ Ⅲ C . Ⅰ ~ Ⅳ D . Ⅰ + Ⅱ + Ⅳ

A . 0~967 B . 0~033 C . 0~031 D . 0~969

A . we B . me C . I D . my

<img src='https://img2.soutiyun.com/ask/2020-07-08/96307556687313.png' /> 假如Propeller公司生产8个推进器，总生产成本将是()。 A、$50,660 B、$54,880 C、$62,643 D、$112,000

A.shafts B.bearings C.reduction gear box

A.Quickly to port，then more slowly to port B.Probably to port C.Slowly to port，then quickly to starboard D.Probably to starboard

A．数据采集 B．相位校正 C．旋转校正 D．平移校正 E．相关性加权和图像重建

A．快进 B．终止 C．跳跃 D．移调