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单选题
You have orders to drop off a barge loaded with propylene oxide at a fleet.In doing so，you must ensure that（）.
A
All wing voids and rakes are pumped dry before tying off the barge
B
The barge is moored next to the bank where it will be protected from a possible collision
C
The barge is under the care of a watchman
D
A rake end is facing upstream to minimize the effect of current on the mooring lines
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更多 “单选题You have orders to drop off a barge loaded with propylene oxide at a fleet.In doing so，you must ensure that（）.A All wing voids and rakes are pumped dry before tying off the bargeB The barge is moored next to the bank where it will be protected from a possible collisionC The barge is under the care of a watchmanD A rake end is facing upstream to minimize the effect of current on the mooring lines” 相关考题
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--__________?
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B.Would you like me to give you a lift
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You execute this command to drop the ITEM table， which has the primary key referred in the ORDERS table：SQL DROP TABLE scott.item CASCADE CONSTRAINTS PURGE； Which two statements are true about theeffect of the command（）A、No flashback is possible to bring back the ITEM table.B、The ORDERS table is dropped along with the ITEM table.C、The dependent referential integrity constraints in the ORDERS table are disabled.D、The dependent referential integrity constraints in the ORDERS table are removed.E、The table definition of the ITEM table and associated indexes are placed in the recycle bin
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Users in your production database complain that they are getting the following error message while trying to insert rows into the ORDERS table： ERROR at line 1： ORA/x7f01654： unable to extend index USERS.ORDERS_IND by 8 in tablespace INDEXES While investigating， you find that the INDEXES tablespace has run out of space and there is no more free space on the disk where the data files are available. Which two actions could you perform to overcome this error without affecting the queries that are currently being executed？（）A、drop and recreate the indexB、coalesce the ORDERS_IND indexC、coalesce the INDEXES tablespaceD、drop and recreate the ORDERS tableE、rebuild the index online and move it to another tablespace
考题
单选题A loaded hopper barge with independent tanks has a placard，with alternating red and white quadrants，on each side and end. Which statement concerning this barge is TRUE?（）A
The cargo will spontaneously ignite if released to the atmosphereB
You must operate this barge as a lead bargeC
The barge should be spotted as far away from the towboat as possibleD
The barge must be in a protected position within the tow
考题
单选题If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）A
Make periodic inspections of bilgesB
Keep the barge under constant surveillanceC
Have a properly certificated tankerman or at least one licensed officer on board the towing vesselD
Verify ullage readings
考题
单选题While underway and towing an unmanned tank barge you are required to（）.A
maintain a strict watch on the barge from the towing vesselB
fly a red flag from the towing vesselC
open the tops of all empty tanks on the bargeD
take hourly soundings of any loaded tanks on the barge
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多选题You execute this command to drop the ITEM table， which has the primary key referred in the ORDERS table：SQL DROP TABLE scott.item CASCADE CONSTRAINTS PURGE； Which two statements are true about theeffect of the command（）ANo flashback is possible to bring back the ITEM table.BThe ORDERS table is dropped along with the ITEM table.CThe dependent referential integrity constraints in the ORDERS table are disabled.DThe dependent referential integrity constraints in the ORDERS table are removed.EThe table definition of the ITEM table and associated indexes are placed in the recycle bin
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Flashback TableB
Flashback QueryC
Flashback Version QueryD
Flashback Transaction Query
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考题
单选题Hanging a barge off means to（）.A
moor a damaged barge to the bank and leaveB
remove and deliver a loaded barge from a multiple towC
remove a barge while locking throughD
tow an empty barge astern
考题
单选题You are making tow.A loaded，open-hopper barge with independent tanks has placards，with alternating red and white quadrants，located at each side and end.You inspect the barge and find slight traces of water in the wing voids due to condensation.What（）.A
Refuse to accept the barge until all wing voids are dryB
Accept the barge and when weather conditions permit run with the wing voids open to ventilate the spacesC
Accept the barge and periodically check the wing voidsD
Return the barge to the fleet and depart without the barge
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填空题What are you advised to do if you have set the controls as a kitchen timer?Touch OFF/ CANCEL to cancel the ____.
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