Proper refrigerant charge
Faulty expansion valve
Insufficient refrigerant
Solenoid valve stuck open
第1题:
A.DNS
B.Telnet
C.SMTP
D.SNMP
E.HTTP
F.TFTP
第2题:
Which of the listed problems could produce a high absolute pressure within a flash type evaporator?
A.production of high salinity distillate
B.seawater feed temperature below 165℃
C.a leak in the first stage demister
D.a cracked distillate pump vent line
第3题:
In the refrigeration system, a shortage of refrigerant is indicated by
A.the compressor short cycling on high pressure cut out switch
B.high suction pressure
C.high head pressure
D.bubbles in the sight glass
第4题:
Excessive cylinder liner
water in the fuel system
Cracked cylinder liner
Leaking lube oil cooler
第5题:
A legacy network that is prone to errors may have issues with services that use UDP. Which of the following services could have problems in this case, due to the fact that UDP is used?()
第6题:
Which of the problems listed could cause erosion of the expansion valve disks and seats?
A.Overcharging the system with refrigerant
B.Faulty compressor suction valve
C.Failure of the high pressure cutout
D.Flash gas formed in the liquid line
第7题:
Which statement about the dangerous cargo manifest,carried on a ship,is TRUE ________.
A.The manifest must be made up by the Master or other designated ship's officer
B.Shipments of hazardous and non-hazardous cargo may be listed on the manifest if they are destined for the same consignee
C.The manifest must be kept in a designated holder on or near the bridge
D.The type of label(s)required for each cargo must be indicated
第8题:
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?
A.A shortage of liquid refrigerant.
B.Excessive frost on the evaporator.
C.Excessive condenser cooling water.
D.Insufficient condenser cooling water flow.
第9题:
A server is having problems accessing its presented storage on a SAN. Which of the following could be causing the problem?()
第10题:
cold fuel oil
low fuel oil pressure
low atomizing steam pressure
water in the fuel oil