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
The（） is fitted in pair one is the main valve, the other the auxiliary or standby.
A
main stem stop valve
B
auxiliary steam stop valve
C
feed check or control valve
D
blow down valve
参考答案
参考解析
解析：
暂无解析
更多 “单选题The（） is fitted in pair one is the main valve, the other the auxiliary or standby.A main stem stop valveB auxiliary steam stop valveC feed check or control valveD blow down valve” 相关考题
考题
Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?A.Pressure-reducing valveB.Unloading valveC.Counterbalance valveD.Pressure-relief valve
考题
Accidental flooding of the engine room bilges by the bilge main is prevented by( ).A.stop-check valves installed in the bilge suction manifoldsB.using a positive displacement reciprocating bilge pumpC.installing educators in all bilge rose boxesD.installing a swing check before each bilge valve
考题
The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ______.A.steam demand is highB.salinity is highC.safety valve simmers(爆发)D.burner flame is extinguished
考题
What type of valve is used to direct the flow of hydraulic fluid?A.relief valveB.direction control valveC.stop valveD.pressure control valve
考题
The valve on the discharge side of a cargo pump on a tank vessel will usually be a ______.A.butterfly valveB.spectacle valveC.check valveD.globe valve
考题
Before discharge of cargo tank ballast is undertaken，______．A.the deck isolating valve is openB.flue gas isolating valveC.blower suction valveD.blower discharge valve
考题
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open ________．A.Globe valveB.Butterfly valveC.Gate valveD.Packless valve
考题
(APS2000)以下哪个LRU的线路故障不会导致“MAINT”灯亮（）A、SPEED SENSORB、THERMOCOUPLEC、MAIN FUEL VALVED、BLEED SERVO VALVE
考题
If the hatch cover does not move, （）should be checked.A、the open valveB、the stop valveC、the steam valveD、the close valve
考题
旅客氧气系统中那个活门打开会导致系统工作灯（SYSON）点亮？（）A、系统关断活门sys shutoff valveB、主分配关断活门main distribution valveC、通风活门ventilation valveD、人工关断活门manual shutoff valve
考题
单选题A shallow dish positioned at the normal water level is connected to the（）This enables the blowing down or removal of scum and impurities from the water surface.A
main stern stop valveB
auxiliary steam stop valveC
scum valveD
blow down valve
考题
单选题A check valve is another name for （）.A
a test valveB
an inspection valveC
a stop valveD
a non-return valve
考题
单选题The opening or closing of the cylinder starting valve is controlled by （）.A
the starting air distributorB
the cut-off valve on the air mainC
the main starting valveD
the air bottle control valve
考题
单选题When the order （） is received from the bridge, the main air stop valve in the starting air line should be shut.A
stand-by engineB
full aheadC
finished with engineD
full away
考题
单选题The C02 flooding system is actuated by a sequence of steps which are（）.A
break glass，pull valve，break glass，pull cylinder controlB
sound evacuation alarm，pull handleC
open bypass valve，break glass，pull handleD
open stop valve，open control valve，trip alarm
考题
单选题If the hatch cover does not move, （）should be checked.A
the open valveB
the stop valveC
the steam valveD
the close valve
考题
单选题The（）enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.A
main stem stop valveB
auxiliary steam stop valveC
feed check or control valveD
blow down valve
考题
单选题Which of the following is NOT true according to the passage?（）A
Both the main steering gear and the auxiliary steering gear should be operatedB
The alarms fitted to the remote control system should be operatedC
The emergency generator compartment should be checkedD
The communication system between the bridge and the steering gear compartment should be operated
考题
单选题If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because（）.A
a check valve will close that prevents reverse circulationB
a centrifugal counterweight counteracts the force of gravityC
the electric pump motor cut outD
the control lever will move to the stop position
考题
单选题The solenoid valve can be typed as a（）A
thermal valveB
magnetic stop valveC
bellows valveD
bimetallic valve
考题
单选题The（）is fitted in the main steam supply line and is usually of the non-return type.A
main steam stop valveB
auxiliary steam stop valveC
feed check or control valveD
blow down valve
考题
单选题A donkey boiler is （）.A
one to supply steam to the main propulsion turbineB
an auxiliary boilerC
A and BD
neither A nor B
考题
单选题In an auxiliary boiler steam and water system, the highest pressure will be in the （）.A
steam stop valveB
dry pipeC
feedwater systemD
generating tubes
考题
单选题Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.A
check and regulate the water levelB
close the air cock once fires are litC
blowdown the gage glassD
crack the steam stop to assure protective steam flow
考题
单选题The（） is fitted in pair one is the main valve, the other the auxiliary or standby.A
main stem stop valveB
auxiliary steam stop valveC
feed check or control valveD
blow down valve
考题
单选题The（） is a smaller valve fitted in the auxiliary steam supply line, and is usually of the non-return type.A
main stem stop valveB
auxiliary steam stop valveC
feed check or control valveD
blow down valve
考题
单选题The valve that prevents water from backing out of the boiler into the feed line is the（）.A
bottom-blow valveB
skin valveC
feed-check valveD
feed-stop valve
热门标签
最新试卷