单选题英制水尺中数字的高度及相邻数字间的间距是：（）A6inB10inC12inD15in
单选题
英制水尺中数字的高度及相邻数字间的间距是：（）
A
6in
B
10in
C
12in
D
15in
参考解析
解析：
暂无解析
相关考题：
单选题对于船舶电站中配电装置，下列说法错误的是（）。A是接受和分配电能的装置B是电源和负载之间的简单导线的连接C是对电源、电力网、负载进行保护的装置D是对电源、电力网、负载进行测量、监视和控制的装置
单选题单拖船拖缆方向与船舶首尾线交角为θ，当0°＜θ＜90°时，且作用点在船首处时，被拖船的运动情况为：（）A既有平动，又有绕转心的转动B只有平动，没有绕转心的转动C只有绕转心的转动，没有平动D既没有平动，又没有绕转心的转动
单选题In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.Ainsure that the hawser leads directly aft as it passes over the stern of the towing vesselBincrease the stability of the towing vessel by raising the hawser off the deckCreduce chafing of the towing hawserDprevent fouling of the hawser on deck gear located on the stern of the towing vessel
单选题两台性能相同的离心泵向某系统单独供液时流量为Q，扬程为H，串联向该系统供液时流量为Q′，扬程为H′，则（）。AQ′=Q，H′=2HBQ′=Q，2H＞H′＞HCQ′＞Q，H′＞HDQ′=2Q，H′=2H
单选题The officer in charge of the navigational watch shall not hand over the watch to the relieving officer if（）.Athere is reason to believe that the latter is not capable of carrying out the watchkeeping duties effectivelyBthe ship is fitted with automatic steeringCthere is daylight or darknessDat no time shall the bridge be left unattended
单选题Which one is the ‘clear grounds’ for a more detailed inspection?（）Apaint peeling off the uptakeBno operation procedures for the oil separatorsCone of ship’s certificates required is invalidDdamaged sanitary pump
单选题The fuel injection pumps on a diesel engine are controlled by a linkage system attached to the （）AcamshaftBcrankshaftCgovernorDflywheel
单选题按舱容比例分配各舱货重，可以保证船舶的（）。A纵向强度受损，且可能产生中垂或中拱B纵向强度受损，且不可能产生中垂或中拱C纵向强度不受损，且不可能产生中垂或中拱D纵向强度不受损，但仍可能产生中垂或中拱
单选题When stand-by before sailing, the duty engineer and officer should check clock, engine telegraph and rudder, and then write it in the （）Aengine room logbookBvoyage logbookCengine room logbook or voyage logbookDengine room logbook and voyage logbook
单选题If the patient vomits during mouth-to mouth resuscitation，the rescuer should FIRST（）.Aignore it and continue mouth-to-mouth ventilationBpause for a moment until the patient appears quiet again，then resume ventilation mouth-to-mouthCswitch to mouth-to-nose ventilationDturn the patient's body to the side，sweep out the mouth and resume mouth-to-mouth ventilation
单选题开关舱时，应注意的事项是（） ①轨道畅通无杂物； ②滚动式舱盖先挂好牵引钢丝，并检查铁锲应位于正常位置，开关时防止出轨； ③禁止站立在舱盖上，开舱时桅屋放舱盖板处应无人； ④舱盖保险钩的挂（脱）可不必考虑； ⑤吊放大块钢质舱盖要挂好钩，稳起稳落，正下方不准站人。A①～④B②～⑤C①②③⑤D①②④⑤
单选题CWBT依船舶设备类别不同，采用不同的维修方式。耐用设备、低值设备、非生产性设备和维护价格高昂而不危及安全的设备采用的维修方式是（）A视情维修B定时维修，逐步向视情维修发展C定时维修D事后维修
单选题柴油机燃用轻柴油运行中，高压油管异常发热的主要原因是（）。 Ⅰ.喷油提前角过大 Ⅱ.喷油压力过高 Ⅲ.供油量过大 Ⅳ.喷油器喷孔堵塞 Ⅴ.喷油器针阀在开启位置咬死 Ⅵ.喷油泵出油阀严重泄漏AⅠ＋Ⅱ＋ⅢBⅡ＋Ⅲ＋ⅣCⅢ＋Ⅳ＋ⅥDⅡ＋Ⅳ＋Ⅵ
单选题A vessel engaged in fishing during the day would show（）.Aone black ballBtwo cones with bases togetherCa cone，apex downwardDtwo cones，apexes together
单选题根据《海上海事行政处罚条例》，海事行政处罚的种类包括：（）I、警告、罚款；II、扣留、吊销船职务证书；III、没收船舶；IV、追究刑事责任AI~IVBII~IVCI~IIIDI、II、IV
单选题红色、白色号旗的宽和高为（）。A0.6m/0.4mB0.5m/0.5mC0.5m/0.3mD0.4m/0.4m