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单选题
Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
A
Electric power and starting air
B
Lube oil standby pump and control air
C
Hydraulic switch and engage jacking gear
D
Motor drain and pneumatic control system power
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Of the items listed below, which one(s) should be saved into the process control block?Ⅰ.Process name and process numberⅡ.Process running informationⅢ.Current opened file informationA．Ⅰ and ⅡB．Ⅰ and ⅢC．Ⅱ and ⅢD．Ⅰ、Ⅱ and Ⅲ
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We have accepted your Order No.TR22.Please open the relative L／C,()here four weeks before the date of shipment.
A、that should reachB、which should reachC、when it reachesD、which should arrive at
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Personnel who are moving or handling material aboard ship should NOT follow which of the listed practices?A.Signaling that all personnel are clear before lifting or lowering materialB.Examining material for sharp edges or protruding points before handlingC.Closing, tagging or securing valves that permit entrance of steam, water, or air into a fitting or other equipmentD.Throwing materials from high places to the deck
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Which of the following are methods EIGRP uses to initially populate (seed) its EIGRP topology table, before learning topology data from neighbors？（）A、By adding all subnets listed by the show ip route connected commandB、By adding the subnets of working interfaces over which static neighbors have been definedC、By adding subnets redistributed on the local router from another routing sourceD、By adding all subnets listed by the show ip route static command
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Which three items should the site survey documentation include？（）A、photographsB、floor plansC、wired network layoutD、blueprints
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Which of the following should be done before and after a service or repair is performed on a server？（）A、 DefragB、 IPCONFIG /releaseC、 Firmware updateD、 Baseline
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Which of the following should be done FIRST to a hard drive before it is disposed?（）A、PartitionB、Physical damageC、Data wipeD、Format
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单选题Which operation should be done when launching an inflatable liferaft by hand?（）A
Open the liferaft casingB
Turn the valve on the CO2 cylinder to start inflationC
Make sure the operating cord is secured to the vessel before throwing it over the sideD
After inflation，detach operating cord from liferaft
考题
单选题All items such as steam pipes, exhaust pipes and fittings which, because of their location and operating temperature, present a hazard should be adequately lagged.That means the items should（）A
not be put into operation too earlyB
be pay adequate attention toC
be used only when necessaryD
be coated with certain material
考题
单选题Which of the valves listed should be used either in the fully opened or the fully closed position?（）A
A gate valveB
A globe valveC
Any check valveD
Any needle valve
考题
单选题Which of the listed items will stop a motor due to a reduction in voltage and restart it when the voltage is restored to normal?（）A
Low voltage protection circuitB
Non-renewable link fuseC
Renewable link fuseD
Low voltage release circuit
考题
单选题If a crankcase explosion has occurred in a diesel engine, and the crankcase remains intact, which of following precautions should be observed?（）A
The cylinder indicator cocks should be openedB
The sump lube oil scavenge pump should be secured immediatelyC
The explosion relief valves should be manually openedD
The crankcase should remain unopened until the engine has cooled
考题
单选题In order to accurately measure very low pressures, which of the instruments listed should be used?（）A
Compound gageB
Bonrdon tubeC
ManometerD
Deadweight gage
考题
单选题When a deck cargo is secured with chain or wire lashings and grab (pear) links，which statement is FALSE?（）A
The amount of take-up is limited by the length of the turnbuckleB
At the grab (pear) link，the slack end of chain should be led back and secured to the chain above the linkC
The lashings should be inspected each day and any slack taken upD
The turnbuckle should be secured with a stick or lock nuts
考题
单选题Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?（）A
Lubrication to the defective cylinder should be increasedB
Cooling water temperature to the engine should be increasedC
Only the turbocharger speed should be reducedD
Engine speed should be reduced
考题
单选题As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）A
Exhaust temperaturesB
Raw water pressureC
Lube oil pressureD
Air box pressure
考题
单选题Which of the following actions should be taken by the engine room watch when the general alarm is sounded continuously?（）A
The fire pump should be startedB
The boiler rims should be securedC
The fixed CO2 system should be initiated into actionD
The engine room ventilation should be secured
考题
单选题Which of the items listed causes a direct acting mechanical governor to operate the engine fuel control linkage?（）A
Hydraulic oil pressureB
Servomotor actionC
Flyweight centrifugal forceD
Relay motion
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单选题An alternator switchboard has a synchroscope and synchronizing lamps, if the synchroscope is broken, which of the steps listed is the most essential before an alternator can be paralleled with the bus （）A
The breaker should be closed when one synchronizing lamp is dark and the other is brightB
The breaker should be closed when both synchronizing lamps are brightC
The frequency meter should be used to determine that the incoming alternator frequency is slightly higher than the busD
A portable phase sequence indicator must be used to verify the information from the lamps
考题
单选题You run a Windows Defender scan on your computer. You notice a valid program listed in Quarantined Items. You need to use this program on your computer. What should you do？（）A
Reinstall the application to another location.B
Restore the program from the Quarantined Items list.C
Remove the program from the Quarantined Items list.D
Repair the program from the Programs option in Control Panel.
考题
单选题After fuel tanks have been topped off, which of the listed procedures should be followed next?（）A
The pressure-vacuum relief valve should be resetB
The tanks should be made seaworthy to prevent contaminationC
The tanks should be sounded to make sure the levels are not risingD
The tanks should be marked with a bull stamp on the manifold filling valve
考题
单选题Which of the actions listed should be taken by the engineer on watch when the general alarm is sounded continuously for 10 seconds?（）A
Engine room ventilation should be startedB
Main engines should be securedC
The fire pump should be startedD
The fixed CO2 system should be activated
考题
单选题Personnel who are moving or handling material aboard ship should NOT follow which of the listed practices?（）A
signaling that all personnel are clear before lifting or lowering materialB
Examining material for sharp edges or protruding points before handlingC
Closing, tagging, or securing valves that permit entrance of steam, water, or air into a fitting or other equipmentD
Throwing materials from high places to the deck
考题
单选题Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）A
The expansion tank should be topped offB
The thermostatic water regulating valves should be manually openedC
The fuel filters should be changedD
The engine should be turned over slowly with the indicator cocks open
考题
单选题Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?（）A
The coolant temperature must be maintained at 180℃B
The thermostatic bypass valves must be manually opened before the engine is startedC
The pressure cap must be removed while the engine is securedD
Electrical power to the heater must be secured before the cooling system is drained
考题
单选题If a crankcase explosion occurs in a diesel engine, which of the listed actions should be taken?（）A
Open the crankcase immediately to check for damageB
Apply fire fighting water through the crankcase breatherC
Allow the engine to cool before opening the crankcaseD
Assume that there is no damage to the crankshaft
考题
单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）A
The diesel oil must never be allowed to mix with the heavy fuelB
The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveC
The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveD
The heating steam must be secured before the diesel oil passes through the three-way valve
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