网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
单选题
下面有关限定最大舵角的主要原因是()。
A
避免舵机过载
B
避免工作油压过高
C
避免舵机尺寸过大
D
转船力矩随着舵角的变化存在最大值
参考答案
参考解析
解析:
暂无解析
更多 “单选题下面有关限定最大舵角的主要原因是()。A 避免舵机过载B 避免工作油压过高C 避免舵机尺寸过大D 转船力矩随着舵角的变化存在最大值” 相关考题
考题
单选题根据我国船舶法定检验规则规定,国内近海航行且船长大于85米的油船、液化气船、散化船应按()要求配备救生艇、筏。A
全船救生艇能容纳船上总人数,另外配备容纳50%全船总人数的气胀式救世主生筏B
全船救生艇能容纳船上总人数的50%,另外配备容纳50%全船的气胀式救生筏C
每舷救生艇能容纳船上总人数的50%,另外配备容纳50%全船总人数的气胀式救生筏D
每舷救生艇能容纳船上总人数,另外配备容纳50%全船总人数的气胀式救生筏
考题
单选题某船夜间航行,海图上在航线附近距本船约7.ˊ0处有一灯塔标注,查灯标表得该灯塔的备注栏:W000°~090°(90°),关于该灯塔灯光下列说法正确的是:()A
位于该灯塔000°~090°之间的船舶能见到白光,可见光范围90°B
位于该灯塔180°~270°之间的船舶能见到白光,可见光范围270°C
位于该灯塔000°~090°之间的船舶能见到白光,可见光范围270°D
位于该灯塔180°~270°之间的船舶能见到白光,可见光范围90°
考题
单选题单列内曲线液压马达柱塞直径为d,导轨段数为k,柱塞数为i,柱塞行程为s,转速为n,油窗口数为z,则每转排量为:()。A
πd²is/4B
πd²ks/4C
πd²ins/4D
πd²izs/8
考题
单选题在转速设定精密调压阀中,为使每一个设定转速所对应的输出气压信号都略高一些,其调整方法是()。A
扭松可调弹簧螺钉10B
扭紧可调弹簧螺钉10C
使顶锥与上滑阀之间垫片减薄D
使顶锥与上滑阀之间垫片加厚
考题
单选题If the electric motor driving an air compressor fails to start, the cause may be a ().A
leaking unloaderB
tripped circuit breakerC
control line leakD
defective pop valve
考题
单选题舱柜上部开敞,船侧未受损而与舷外水不相通,则进水对船舶浮性,稳性和吃水影响()。A
必须用重量增加法或浮力损失法进行计算并进行自由液面修正B
必须用逐步逼近的方法进行计算C
可按装载重物计算,但不必进行自由液面修正D
必须用装载重物计算,且应进行自由液面修正
考题
单选题轮机长应具备一定的管理能力,能以科学方法管理全船机电设备和轮机人员,为此轮机长必须具备()。 a.丰富的理论知识和实践经验; b.善于学习、总结经验,能解决船舶机电设备出现的疑难问题; c.主动承担责任,在关键和危急时刻始终站在最前面; d.具备敏锐的应急反映能力; e.在关键时刻服从船长指挥。A
a+b+eB
a+b+cC
a~dD
a~e
考题
单选题When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind,the approach is best made().A
with bow out,stern inB
with bow in,stern outC
parallel to the dock,as close in as possibleD
parallel to the dock,as far out as possible
考题
单选题Defective governor in a diesel engine may lead to ().A
smoky exhaustB
starting failureC
ignition relayD
over speed
考题
单选题Where tanks are arranged for either oil or ballast () must be fitted in the pipe so that only the ballast main or the oil transfer main connected to the tank.A
a sea water chestB
a change-over chestC
a buffer tankD
a three-way valve
考题
单选题When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she().A
should not be regarded as a vessel constrained by her draughtB
should be regarded as a vessel constrained by her draughtC
shall be regarded as a vessel restricted in her ability to maneuverD
should be regarded as a non-displacement vessel
考题
单选题狭水道内操船,除掌握船舶操纵要领外,还应注意()。 ①注意掌握狭水道内水流流向、流速的变化以及风对操船的影响,正确预配风流压差; ②船舶通航密度大且碍航物多,应及早备车,以便随时控制船速,遵守有关航行规则,正确避让; ③能见度不良时除开启雷达、加强了望、减速行驶外,应根据情况派人瞭头和备锚航行; ④驶过浅水区应连续测深,保证足够的富余水深并尽量选高潮通过,必要时应降速航行以减小首倾; ⑤近岸侧航行应减速,防止浪损及首向深水侧偏转; ⑥在航行中要经常检查和核对有关助航仪器和设备A
①②③④⑤⑥B
①②④⑤⑥C
①②③④D
②③④⑥
考题
单选题As oil pipe line connections were broken,()quantity of oil was caused to spill onto the wharf and into the dock water.A
a not knowingB
an unknowingC
an unknownD
a not known
考题
单选题When fuel is injected late into a diesel engine cylinder,().A
the exhaust will be clearB
fuel consumption will be lowC
all the fuel will be burned at top dead centerD
fuel consumption will be high
考题
单选题已知6300ZC型船用柴油机气缸套最大内径增量为1.2mm,则最大缸径为()。A
631.2mmB
301.2mmC
298.8mmD
31.2mm
热门标签
最新试卷