A、a low level in the engine expansion tank
B、excessively high coolant pressure
C、improper temperatures
D、malfunctioning of the jacket water heater
更多“If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in （）”相关的问题
A、Only a radar expert can determine if the radar is operating B、All radars have indicator lights and alarms to signal improper operation C、A radar range compared to the actual range of a known object can be used to check the operation of the radar D、The radar resolution detector must be energized to check the radar
A、If the file exists it will be opened for editing. If the file does not exist an error message will be displayed. B、If the file exists it will be opened for editing. If the file does not exist a new file with the name file.out will be created and opened for editing. C、If the file exists an error message will be displayed. If the file does not exist a new file with the name file.out will be created and opened for editing. D、If the file exists the operator will be asked whether to open the file or overwrite the file. If the file does not exist a new file with the name file.out will be created and opened for editing.
A、The operation would fail if tbs_1 were a read-only tablespace. B、The operation would fail if tbs_1 were a read/write tablespace. C、The operation would fail if tbs_1 were the default tablespace for the database. D、If the above operation were successful， media recovery would be required to bring the tablespace online. E、If the above operation were successful， instance recovery would be required to bring the tablespace online.
A、Mate's license B、Restricted radiotelephone operator permit C、Second-class radio operator's license D、Seaman's document
A、The index is not used by the optimizer but is maintained during DML operations. B、The index is not used by the optimizer and is not maintained during DML operations. C、The index is used by the optimizer only if a hint is specified in the query statement and is maintained during DML operations. D、The index is used by the optimizer only if a hint is specified in the query statement but is not maintained during DML operations.
A、Personnel may work beneath suspended loads，as long as they are alert and wear hard hats B、If a suspended load with no tag begins to spin，personnel should attempt to stop the spinning if the load is within reach C、If tag lines are used to control a suspended load，they should be secured to the deck D、Personnel not involved in the hoisting operation should be kept clear of the transfer area
A、Personnel may work beneath suspended loads，as long as they are alert and wear hard hats B、If a suspended load with no tag begins to spin，personnel should attempt to stop the spinning if the load is within reach C、If tag lines are used to control a suspended load，they should be secured to the deck D、Personnel not involved in the hoisting operation should be kept clear of the transfer area
A、The master may，at his/her discretion，turn off the AIS if he/she believes that it may compromise the safety or security of the vessel B、Under no circumstances shall AIS be turned off while underway as this could endanger the vessel and those around her C、AIS is always required to be operating if the vessel is in or in the vicinity of a VTS area D、AIS is always required to be operating if the vessel is within 100 nautical miles of the coastline
A、A.be open to view so，if a foreign object gets in the gearing，the operator can immediately stop the machinery B、B.have a guard over the gearing C、C.be painted a contrasting color from the base color in order to call attention to the gearing D、D.not be operated if there is any crew within 10 feet of the machinery
A、An EMP table is created if a table does not exist. Otherwise, if the EMP table is appended with the loaded data. B、The SQL* Loader data file myfile1.dat has the column names for the EMP table. C、The SQL* Loader operation fails because no record terminators are specified. D、Field names should be the first line in the both the SQL* Loader data files. E、The SQL* Loader operation assumes that the file must be a stream record format file with the normal carriage return string as the record terminator.
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