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
开航前对测深仪进行检查,要求零点显示准确,浅水区域的深度误差不超过±1米,深水区域不超过±5米,或指示深度的(),取其大者。
A
3%
B
4%
C
5%
D
6%
参考答案
参考解析
解析:
暂无解析
更多 “单选题开航前对测深仪进行检查,要求零点显示准确,浅水区域的深度误差不超过±1米,深水区域不超过±5米,或指示深度的(),取其大者。A 3%B 4%C 5%D 6%” 相关考题
考题
单选题公证检验是指应船舶所有人、承租人、保险人或其他有关方面的申请,由验船师所进行的一种具有公证性质的检验,用以证明()。A
船舶实际存在的状况B
船舶的技术状况C
可否为船舶签发证书D
船舶的适航状况
考题
单选题在压力为0.5MPa时,饱和水的比容为0.0010928m3/kg,饱和水蒸气的比容为0.37481m3/kg。若锅炉产生的压力为0.5MPa的水蒸气的比容为0.38m3/kg,则处于()状态。A
饱和水B
湿蒸汽C
饱和蒸汽D
过热蒸汽
考题
单选题轻型单吊杆在吊货滑车组滑轮数及吊重相同的条件下,吊杆所受轴向压力的大小主要取决于:()A
吊杆的仰角B
吊杆长度与吊杆承座至千斤索眼板座之间高度的之比大小C
吊杆自重D
吊货滑车组滑轮的摩擦力
考题
单选题A船离港时的GM=0.150m,B船离港时的GM=1.100m,以()下是正确的。A
A船的稳性肯定满足要求B
B船的稳性肯定满足要求C
两船的稳性肯定不满足要求D
两船的稳性均无法确定是否满足要求
考题
单选题FLOATING,NOT CONTROLLED,WITHOUT A CLEARLY DETERMINABLE DIRECTION means().A
GroundingB
SailingC
AdriftD
Running into danger
考题
单选题Diesel fuel vapors ().A
can not be ignited by a spark unless the vapor is in a confined spaceB
are nontoxic in all concentrationsC
can not be ignited by a spark unless they are at their auto-ignition temperatureD
are heavier than air
考题
单选题衡量轴系同轴度实测值δ总、φ总的标准,下列()的说法不正确。A
标准δ总δ总max、φ总max构成δ总max-φ总max三角形B
δ总max、φ总max在三角形内的符合要求C
δ总max、φ总max在三角形外的则超差D
当δ总max<φ总max,φ总<φ总max时符合要求
考题
单选题If you don’t understand the meaning of the technical terms of the diesel engine, you can () the dictionary of machine technology.A
look forB
find outC
consultD
read
考题
单选题以下关于压载水管理方法,表述有误的是()。A
近岸生物被排放到深海中通常都不能存活B
深海生物被排放到近岸水域通常都不能存活C
近岸生物被排放到另一近岸水域通常也都不能存活D
当在海上进行压载水更换时,应考虑IMO关于更换压载水安全方面的指导
考题
单选题用衰减曲线法整定的调节器比例带为PBS,振荡周期为Ts,对PID作用其PB和Td分别为()。A
PB=PBS,Td=0.1TsB
PB=1.2PBS,Td=0.3TsC
PB=0.8PBS,Td=0.3TsD
PB=0.8PBS,Td=0.1Ts
考题
单选题在采用压力比例调节器和电动比例操作器的辅锅炉燃烧控制系统中,压力调节器中定值弹簧和电位器可分别调整()。A
上限值,下限值B
给定值,比例作用强弱C
下限值,比例调节范围D
上限值,压力变化范围
考题
单选题Which of the following statements is true concerning all three-phase alternators?()A
Each has three separate but identical armature windings acted on by one system of rotating magnetsB
Each has one armature winding acted on by three identical but separate systems of rotating magnetsC
All three-phase alternators are designed to operate with a O8 leading power factorD
The three phases always provide power to the load through three sets of slip rings and brushes
热门标签
最新试卷