In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to （）..

第1题

[单选题] In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）

A、noise coming from that air starting valve B、continuous operation of the starting air compressor C、zero air pressure in the air starting system D、overheated starting air pipe to the cylinder head

点击查看答案

第2题

[单选题] The engine will fail to start unless （）.

A、the pressure of the starting air is high enough B、there is enough air in the air reservoirs C、the air is supplied into the cylinders in the appropriate sequence D、all of the above

点击查看答案

第3题

[多选题] Which three actions are required to configure the Flashback Database? （）

A、set Flash Recovery Area B、enable Flashback logging C、create FLASHBACK tablespace D、start the database in the ARCHIVELOG mode E、start the database in the NOARCHIVELOG mode

点击查看答案

第4题

[单选题] Reduced voltage applied to a motor during the starting period will （）.

A、result in decreased acceleration time only B、lower the starting current and increase accelerating time C、cause a greater starting torque D、increase the starting current and pump capacity

点击查看答案

第5题

[单选题] A Windows XP system locks up after the GUI starts to load. The system will start in Safe Mode. TheEvent Viewer reports that a driver failed to load. Which of the following methods would help diagnose the problem? （）

A、Enable boot logging. In Safe Mode, read the ntbtlog.txt file. B、In Safe Mode, run the sigverif utility. C、Restart the system from the OEM recovery CD; do a full restore. D、In Safe Mode, run the driverquery utility.

点击查看答案

第6题

[单选题] In the event of the cylinder starting valve leakage （） would pass into the air pipes and ignite the oil deposited.

A、cooling water B、vapor from the boiler C、starting air D、hot gases

点击查看答案

第7题

[多选题] The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management (ASM) instance. SQL> STARTUP; Which two activities are performed during a successful start up operation?（）

A、The databases configured to use the ASM instance are mounted B、The disk groups are mounted as per the ASM_DISKGROUPS initialization parameter C、ASM starts the Oracle Cluster Synchronization Services (CSS) daemon if it is not started D、ASM discovers and examines the contents of all files that are in the paths specified in the ASM_DISKGROUPS initialization parameters

点击查看答案

第8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 circuit B、place a crow bar in the flywheel of the unit C、inform all persons in the area not to start the unit D、make a log book entry

点击查看答案

第9题

[单选题] A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）

A、low lube oil temperature B、low starting air temperature C、air bubbles in the fuel oil system D、water in the starting air system

点击查看答案

第10题

[多选题] The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management (ASM) instance. SQL> STARTUP; Which two activities are performed during a successful start up operation? （）(Choose two.)

A、The databases configured to use the ASM instance are mounted B、The disk groups are mounted as per the ASM_DISKGROUPS initialization parameter C、ASM starts the Oracle Cluster Synchronization Services (CSS) daemon if it is not started D、ASM discovers and examines the contents of all files that are in the paths specified in the ASM_DISKGROUPS initialization parameters

点击查看答案

In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to （）

请使用微信扫码支付