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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 control
B
sound evacuation alarm，pull handle
C
open bypass valve，break glass，pull handle
D
open stop valve，open control valve，trip alarm
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考题
The CO2 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
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The refrigeration system low pressure cutout switch is actuated by______.A.an electric system managerB.a sensing bulb at the tail coil of the evaporatorC.pressure changes in the suction lineD.failure of the king solenoid valve
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A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by ______.A.one controlB.two controlsC.three controlsD.none of the above
考题
During the planning stage of cargo operations，stress and displacement calculations should be carried out at incremental steps commensurate with the number of _____ and loading sequence of the proposed operation．A.coefficient of loadingB.stowage factorsC.ordersD.pours
考题
Program ( ) graphically present the detailed sequence of steps needed to solve a programming problem.A.modules
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D.functions
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考题
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考题
An administrator is installing AIX 6.1 on a new LPAR and the boot sequence has stalled with reference code 0c31. What is the most likely cause?（）A、The system is waiting for user input to define console type lft0.B、The system is waiting for user input to define console type tty0.C、The system is waiting for user input to define console type vty0.D、The system is waiting for user input to define console type vsa0.
考题
When performing an online backup，what is the proper order of the following steps？（） a. Issue the alter database end backup command. b. Back up the archived redo logs. c. Issue the alter database begin backup command. d. Back up the database files. e. Determine the beginning log sequence number. f. Determine the ending log sequence number. g. Force a log switch with the alter system switch logfile command.A、a， b， c， d， e， f， gB、c， d， a， b， e， g， fC、f， d， b， g， a， c， eD、e， c， d， a， g， f， bE、a， f， b， g， e， c， d
考题
单选题The refrigeration system low pressure cutout switch is actuated by （）.A
an electric system managerB
a sensing bulb at the tail coil of the evaporatorC
pressure changes in the suction lineD
failure of the king solenoid valve
考题
单选题Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.A
flashing pointB
combustion pointC
auto-ignition pointD
lower explosive limit
考题
单选题You want to configure the Flashback Database feature and retain flashback logs for three days. Presently the database is open and configured in ARCHIVELOG mode. The following steps must be performed in the correct sequence to do this： 1. Set the retention target： SQL ALTER SYSTEM SET DB_FLASHBACK_RETENTION_TARGET=4320； 2. Enable Flashback Database： SQL ALTER DATABASE FLASHBACK ON； 3. Mount the database： SQL STARTUP MOUNT EXCLUSIVE 4. Shutdown the instance： SQL SHUTDOWN IMMEDIATE 5. Open the database： SQL ALTER DATABASE OPEN； Choose the correct sequence.（）A
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4， 3， 1， 2， 5C
2， 4， 3， 5， 1D
4， 2， 5， 3， 1
考题
单选题Your vessel is equipped with a fixed C02 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.A
Use the C02 system and evacuate the engine roomB
Use the fire main system and evacuate the engine roomC
Evacuate the engine room and use the C02 systemD
Evacuate the engine room and use the fire main system
考题
单选题A technician would like to load an operating system CD on startup. Which of the following settings would a technician change in the BIOS?（）A
Enable TPMB
Enable BIOS passwordC
Disable TPMD
Boot sequence
考题
单选题You are operating your database in NOARCHIVELOG mode. Your most recent backup includes a copy of all of the data files and the control files taken when the current log sequence number was 45. You experience disk failure on the drive on which your SYSTEM tablespace data files are stored. At the time of the failure， the current log sequence number is 98. Which files should you restore to recover from the loss of the SYSTEM tablespace data files？（）A
Only the data files.B
All of the data files and the control files.C
Only the data files belonging to the SYSTEM tablespace.D
Only the data files belonging to the SYSTEM tablespace and the control files.
考题
单选题Which fire detection system is actuated by sensing a heat rise in a compartment?（）A
Manual fire detection systemB
Automatic fire detection systemC
Smoke detection systemD
Watchman's supervisory system
考题
单选题Fire alarm system thermostats are actuated by（）.A
smoke sensorsB
the difference in thermal expansion of two dissimilar metalsC
pressure loss due to air being heatedD
an electric eye which actuates when smoke interferes with the beam
考题
单选题A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.A
one controlB
two controlsC
three controlsD
none of the above
考题
单选题Which of the following statements describes one of the functions of the ballast system?（）A
To permit flooding of any fuel oil storage tank on any class of shipB
To use it as a secondary service systemC
To store reserve feed or potable water for extended cruisesD
To stabilize the ship by flooding certain designed tanks with seawater
考题
单选题To correct the condition of slugging and flooding back in a refrigeration system, it may be necessary to （）.A
re-adjust the discharge pressureB
clean the expansion valve screenC
add refrigerantD
adjust the expansion valve
考题
单选题When performing an online backup，what is the proper order of the following steps？（） a. Issue the alter database end backup command. b. Back up the archived redo logs. c. Issue the alter database begin backup command. d. Back up the database files. e. Determine the beginning log sequence number. f. Determine the ending log sequence number. g. Force a log switch with the alter system switch logfile command.A
a， b， c， d， e， f， gB
c， d， a， b， e， g， fC
f， d， b， g， a， c， eD
e， c， d， a， g， f， bE
a， f， b， g， e， c， d
考题
单选题You want to configure the Flashback Database feature and retain flashback logs for three days. Presently the database is open and configured in ARCHIVELOG mode.The following steps must be performed in the correct sequence to do this: Choose the correct sequence.（）A
4, 1, 3, 2, 5B
4, 3, 1, 2, 5C
2, 4, 3, 5, 1D
4, 2, 5, 3, 1
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