allow an alternate main pump to start in the fully loaded condition thus developing immediate full torque
prevent either main pump from being hydraulically motored when idle by cross pressure flow
prevent both units from operating simultaneously which could result in doubling the flow of oil and pressure leading to over pressurization of the system
all of the above
第1题：
What must be handed over to relieving Engineer Officer at transition of change command?
第2题：
The term （） linguistics may be defined as a way of referring to the approach which studies language change over various periods of time and at various historical stages.
Asynchronic
Bdiachronic
Ccomparative
Dhistorical comparative
第3题：
Over the past 20 years, the Internet has helped change our world in way or another for the better.
A. anyB. one C. everyD. either
第4题：
You use the Memory Advisor to tune the memory structures of your database. What is the prerequisite to use the Memory Advisor？（）
第5题：
Which of the following procedures best explains how to enable the NIS name resolution to take precedence over DNS on a system-wide basis?（）
第6题：
The “Port-Off-Stbd” selector switch on an autopilot steering stand is used to ______．
A.change from hand electric steering to automatic gyro
B.change over one steering system to the other
C.change over hand electric steering to non-follow-up
D.change over the port to the starboard bow thruster
第7题：
Which of the following is the FIRST course of action before implementing a change to a server？（）
第8题：
the obvious change over the past decades is the decline of the authority of the roman catholic church. ()
第9题：
What will happen to associated preventive maintenance (PM) records when an asset is decommissioned?（）
第10题：
The database must be in the ARCHIVELOG mode.
The automatic memory tuning must be enabled.
The change tracking feature must be enabled.
The automatic memory tuning must be disabled.