Before the operation of the derrick, check all （）(索具)closely and everything must be in good condition...

第1题

A、After operation, start the electric motor. B、Before operation, stop the electric motor. C、Before operation, start the electric motor. D、After operation, stop the electric motor.

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第2题

[] Before the（）of the derrick, check all the tackle closely.

A、A.operation B、B.operate C、C.operated D、D.operator

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第3题

[单选题] Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）

A、Because row IDs may change during the flashback operation B、Because the object number changes after the flashback operation C、Because the rows are retrieved from the recycle bin during the flashback operation D、Because the table is moved forward and back to a temporary during the flashback operation

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第4题

[单选题] Which operation should be done when launching an inflatable liferaft by hand?（）

A、Open the liferaft casing B、Turn the valve on the CO₂ cylinder to start inflation C、Make sure the operating cord is secured to the vessel before throwing it over the side D、After inflation，detach operating cord from liferaft

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第5题

[单选题] Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）

A、Because row IDs may change during the flashback operation B、Because the object number changes after the flashback operation C、Because the rows are retrieved from the recycle bin during the flashback operation D、Because the table is moved forward and back to a temporary during the flashback opertion

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第6题

[] If the head pressure is too high,（）

A、A.the relief valve should open before the high-pressure cutout B、B.the relief valve should open and let excess refrigerant go to receiver C、C.the high-pressure cutout switch should operate before the relief valve opens D、D.close in on the suction valve

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第7题

[] If the head pressure of a reciprocating refrigeration compressor is excessive, （）.

A、A.the relief valve should open before the high pressure cutout B、B.the relief valve should open and allow the excess refrigerant to flow to the receiver C、C.the high pressure cutout switch should operate before the relief valve opens D、D.you should close in on the suction valve

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第8题

[单选题] When commencing cargo operations on a container ship，one cell at a hatch is generally discharged completely (to the bottom of the ship) before removing any containers from the adjoining cells to（）.

A、remove an existing list that would slow down cargo operations B、initiate loading in conjunction with unloading at the hatch C、improve stability during cargo operations D、allow longshoremen easy access to the hatch

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第9题

[单选题] You updated the resource plan directive for the resource consumer group， DSS_USERS. The resource plan directive is assigned to the DSS_PLAN by using the following statement： SQL>EXEC DBMS_RESOURCE_MANAGER.UPDATE_PLAN_DIRECTIVE （PLAN => ’DSS_PLAN’， GROUP_OR_SUBPLAN => ’DSS_USERS’， NEW_CPU_P1 => 80， NEW_SWITCH_GROUP => ’CANCEL_SQL’， NEW_SWITCH_ESTIMATE => TRUE， NEW_SWITCH_TIME => 600）； A user connects to the database and starts an operation. What is the outcome if Oracle estimates that the execution time for this operation w

A、 The session is killed before starting the operation. B、 The session generates an error before starting the operation. C、 The session switches to the CANCEL_SQL resource consumer group before starting the operation. D、 The session hangs before starting the operation.

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第10题

[单选题] The Declaration of Inspection made before oil transfer operations must be signed by the （）.

A、Master of the vessel B、Captain of the Port C、person(s) in charge D、All of the above

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Before the operation of the derrick, check all （）(索具)closely and everything must be in good condition.

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