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 unit of electrical power is the （）
A
ampere
B
kilovolt
C
watt
D
farad
参考答案
参考解析
解析：
暂无解析
更多 “单选题The unit of electrical power is the （）A ampereB kilovoltC wattD farad” 相关考题
考题
The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs, is to _____.A.secure and tag the electrical circuitB.place a crow bar in the flywheel of the unitC.inform. all persons in the area not to start the unitD.make a log book entry
考题
Which of the following can be installed to avoid brown outs?()
A. A larger electrical breakerB. An inline fuse boxC. A UPSD. Multiple power supplies
考题
The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the ______.A.bridge control panelB.disconnect linksC.main switchboardD.governor relay box
考题
Which statement concerning reserve sources of energy for GMDSS is FALSE ________．A.While the ship is at sea，there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energyB.Both the VHF and MF/HF installations must be simultaneously suppliedC.A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in powerD.If a UPS or equivalent is used to supply power to the ship's GPS receiver or other source of positional information，a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power
考题
A new（）will be set up in this area so we will have enough electricity in the future.A、power stationB、electricity stationC、power factoryD、electrical station
考题
Which of the following can be installed to avoid brown outs?（）A、A larger electrical breakerB、An inline fuse boxC、A UPSD、Multiple power supplies
考题
下面哪一个打开备用电源的操作顺序是正确的？A、I 打开Standby electrical power。II 打开E-inverter。 III 打开TRU。B、I 打开Standby electrical power。II 打开TRU。 III 打开E-inverter。C、I 打开E-inverter。II 打开TRU。 III 打开Standby electrical power。D、I 打开TRU。II 打开E-inverter。 III 打开Standby electrical power。
考题
增强型电源系统是如何同MCDU相连？A、直接通过每一个GCUB、通过GAPCU和CFDIUC、通过CFDIU同EGIU(ELECTRICAL GENERATION INTERFACE UNIT)
考题
单选题What does the article indicate about ECV-12?A
It will replace the regional electrical grid.B
It lies 400 miles from the nearest road system.C
It is based on a power station in Britain.D
It will send out power via underground cables.
考题
单选题（）conveys a signal of desired rudder angle from the bridge and activates the power unit and transmission system unit the desired angle is reached.A
The control equipmentB
The power unitC
The transmission systemD
The follow-up mechanism
考题
单选题When a rescuer finds an electrical burn victim in the vicinity of live electrical equipment or wiring，his first step is to（）.A
flush water over any burned area of the patientB
apply ointment to the burned areas on the patientC
get assistance to shut down electrical power in the areaD
remove the patient from the vicinity of the live electrical equipment or wiring
考题
单选题When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates （）.A
good insulationB
bad insulationC
high insulation power factorD
a high slot discharge factor
考题
单选题In general, the oil mist detectors include a built-in heating unit and a compact plug for electrical connectionThe function of heating unit is to （）A
avoid false alarms as a result of condensing water vaporB
avoid danger of frost under very cold weatherC
reduce the viscosity of the crankcase atmosphere in order to improve the fluidityD
keep the temperature of the oil mist detectors in an appropriate range
考题
单选题Which statement concerning reserve sources of energy for GMDSS is FALSE（）.A
While the ship is at sea，there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energyB
Both the VHF and MF/HF installations must be simultaneously suppliedC
A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in powerD
If a UPS or equivalent is used to supply power to the ship's GPS receiver or other source of positional information，a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power
考题
单选题Before doing maintenance on electrical equipment, you should （）.A
turn off power firstB
turn on power firstC
with a test pen in handD
tell C/E
考题
单选题Spontaneous ignition can result from（）.A
an unprotected drop-light bulbB
careless disposal or storage of materialC
smoking in bedD
worn electrical wires on power tools
考题
单选题The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs, is to （）.A
secure and tag the electrical circuitB
place a crow bar in the flywheel of the unitC
inform all persons in the area not to start the unitD
make a log book entry
考题
单选题Which of the following can be installed to avoid brown outs?（）A
A larger electrical breakerB
An inline fuse boxC
A UPSD
Multiple power supplies
考题
单选题In an alternating current electrical system, a low system power factor is a direct sign of （）A
wasted energyB
efficient operationC
a short in the exciter field windingsD
an excessive number of minor system grounds
考题
单选题To prevent the spread of fire by convection you should （）.A
remove combustibiles from direct exposureB
cool the bulkhead around the fireC
close all openings to the areaD
shut off electrical power
考题
单选题Complete maintenance of electrical motors should include periodic checks for machine （）A
vibrationB
watertight integrityC
speed droopD
reactive power
考题
单选题What is the MOST important consideration when determining how to fight an electrical fire?（）A
Whether the fire is in machinery or passenger spacesB
Danger of shock to personnelC
The amount of toxic fumes created by the extinguisherD
Maintaining electrical power
热门标签
最新试卷