判断题溢流阀可分为先导式溢流阀,差动型溢流阀和直动式溢流阀。A对B错
判断题
溢流阀可分为先导式溢流阀,差动型溢流阀和直动式溢流阀。
A
对
B
错
参考解析
解析:
暂无解析
相关考题:
单选题If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because().Aa check valve will close that prevents reverse circulationBa centrifugal counterweight counteracts the force of gravityCthe electric pump motor will cut outDthe control lever will move to the stop position
单选题航海日志重大记事栏内应记录的内容包括()。 Ⅰ.应急演习的时间地点及经过情况; Ⅱ.船员严重失职和违纪现象; Ⅲ.船舶厂修的重要项目; Ⅳ.检查消防、救生设备的时间和情况AⅠ、ⅡBⅠ—ⅣCⅠ、Ⅱ、ⅣDⅠ—Ⅲ
单选题主柴油机功率为5800~7350kW时,余热汽轮发电机组(T/G)装置发电量()。A已能满足全船用电的需要B部分满足全船部分用电的需要C除满足全船用电的需要外,还可在轴带发电机作为电动机时供电D都不正确
单选题对于二冲程横流扫气式柴油机的进、排气口定时有()。A扫气口先开,排气口后开,扫气口先关,排气口后关B扫、排气口同时启闭C排气口先开,扫气口后开,排气口先关,扫气口后关D排气口先开,扫气口后开,扫气口先关,排气口后关
单选题At 0715 you take the following bearings: Race Rock Light 328°pgc; Little Gull Island Light 249°pgc; Mt. Prospect Antenna 036°pgc. Based on your 0715 fix,which statement is TRUE?()AYou are to the left of your track lineBYour fathometer reads about 265 fathomsCYou are in a cable areaDYou are governed by the Inland Rules
单选题A-frames are mounted on the bed plate and support () and cylinder block.Athe main bearingBthe cylinder coverCthe entablatureDthe sump
单选题There shall be two principal () through the harbor for the passage of vessels of over 60 tons burden.AstraitsBchannelsCcanalsDroadsteads
单选题下列有关锋附近气温变化正确的说法是()。A在锋附近气温连续变化B在锋附近天气发生剧烈变化C在锋附近天气变化很小D在锋附近气压连续变化