【名词&注释】
焚烧炉(incinerator)、工作情况(working condition)、指挥中心(command center)、用柴油机、轮机长(chief engineer)、驾驶台(driving platform)、第七条、不稳定性骨折(unstable fracture)、明显变化(significant change)、锯齿形(zigzag)
[单选题]关于焚烧炉的工作情况，下列哪一条是错误的______。
A. 点火前应先扫气30s以上
B. 污油柜加温至80～100℃
C. 用柴油先点燃焚烧炉，待炉膛温度达600℃左右再引入污油
D. 炉灰可在距陆地3nmile以外倾倒入海
查看答案&解析
举一反三：
[单选题]听到消防警报后，全体船员应在_______分钟内集合完毕。
A. 5分钟
B. 4分钟
C. 3分钟
D. 2分钟
[单选题]属于不稳定性骨折(unstable fracture)的有()
A. 横断
B. 锯齿形(zigzag)
C. 粉碎性
[单选题]GMDSS的遇险报警至少包含的信息是_____。
A. 船位
B. 船舶的识别
C. 船舶的遇险时间
D. A和B．C
[单选题]现场指挥中心在船舶消防中，应向驾驶台报告的信息有：
A. 火灾的位置和现场情况以及消心总管的压力
B. 灭火情况及火灾的结果
C. 无法解释的其他情况
D. 以上均对
[单选题]第二组Displacement pumps are those where the volume of the pump chamber is alternately increased to draw the liquid in from the suction pipe and then decreased to force the liquid out into the delivery pipe. Centrifugal pumps are those wherein an impeller rotating at high speed throws the liquid by centrifugal force from the center to the periphery of the impeller where the liquid is discharged through the delivery outlet.
A. Gear pump consists of two or more meshing gears (spur, single or double helical teeth) enclosed m a close-fitted housing. These are used extensively for pumping fuel oil, lubricating oil and hydraulic oil. When gears are unmeshed on the inlet side, a pressure drop occurs that helps the atmospheric pressure acting on the surface of the oil in the reservoir to force it up the pipe to fill the void, the oil is then transferred around the periphery of the pump housing. As the gear teeth mesh again on the outlet side, they form. a seal that prevents oil from backing up to the inlet, the oil in the void is then be forced out into the discharge line.
B. All vane pumps have a rotor driven within a ring (cam ring) by a drive shaft coupled to a prime mover. A cylindrical rotor with sliding vanes, generally in radial slots, rotates within the ring. The center of the rotor is offset from the center of the ring. In a simple vane pump, as the rotor turns, the vanes are forced outward against the inner surface of the cam ring by centrifugal force. This outward radial movement of the vanes and turning of the rotor causes the chamber between the vanes to increase as the vanes pass further away from the inlet port. This increase in volume results in a lowering of pressure until the atmospheric pressure is sufficient to force oil from the reservoir into the inlet chamber. Oil from the inlet is swept away by the vanes toward the outlet port through a decreasing series of chambers until it is forced through the outlet port. A vane pump of balanced design has an elliptical cam ring so that two pumping chambers are formed. This pump is in hydraulically balance, since the two intake and two outlet ports are diametrically opposed to each other. Therefore the side loads exerted on the rotor cancel out, thereby increasing bearing lift and permitting high operating pressure.
C. According to the last sentence of paragraph 1, from where the liquid is discharged through the delivery outlet?
D. from the eye of the impeller
E. from passage of impeller
F. from the periphery of the impeller
G. from the impeller
[单选题]船用柴油机换向操纵试验时间，规定不大于______。
A. 15秒
B. 20秒
C. 25秒
D. 30秒
[单选题]在第七条，“如果来船的罗经方位没有明显变化(significant change)，则应认为存在这种危险”一款中，"罗经方位"是指：
A. 真方位
B. 相对方位
C. 磁罗经或电罗经方位
D. 弦角
[单选题]我国《海船船员值班规则》规定，对于无人值守机舱，当机舱呼叫照料时，______应立即到达机舱。
A. 轮机长
B. 大管轮
C. 值班轮机员
D. 主管轮机员
[单选题]以下何种水温能生存少于12小时：
A. 10℃～15℃
B. 15℃～20℃
C. 20℃～25℃
D. 10℃以下
本文链接：https://www.zhukaozhuanjia.com/download/vrk54v.html
