海船船员考试
单选题When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）A maintain alignment when the ship’
题目
maintain alignment when the ship’s hull is working in heavy seas
ensure engine vibrations correspond to the natural frequency of the hull
permit the engine to expand away from the driven equipment as the engine heats up and expands
maintain engine thrust bearing clearances
相似问题和答案
第1题：
A controllable pitch propeller on a diesel driven vessel eliminates the need for
A.friction clutches
B.disconnect clutches
C.reversing gears
D.reduction gears
第2题：
In reducing engine speed to an efficient propeller speed by the use of reduction gears, _______.
A.speed and torque are both reduced
B.speed is reduced and torque remains unchanged
C.speed is reduced and torque is increased
D.speed is sometimes unchanged while torque is increased
第3题：
Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true?(74).
A．When your computer is on, only RAM is used to store information.
B．When your computer is on, only disk drives are used to store information.
C．When your computer is off, only RAM is used to store information.
D．When your computer is off, only disk drives are used to store information.
解析：本题含义可表述为，由于RAN只有当计算机运行时是工作的，所以当计算机关闭时使用磁盘来存储信息。所以应该选择D(当计算机关闭后，只有磁盘被用于存储信息)。
第4题：
Which of the following explains the relationship between a physical and logical partition？（）
- A、A physical partition is hosted on one or more logical partitions. A logical partition is used when describing storage.
- B、A logical partition is hosted on one or more physical partitions. A physical partition is used when describing storage.
- C、A physical partition is used when describing only a SCSI or SAS disk. A logical partition is used when describing a SAN LUN.
- D、A logical partition is used when describing only a SATA or SAS disk. A physical partition is used when describing RAID or mirrored arrays.
正确答案:B
第5题：
A.When a single device is configured to provide differentiated services.
B.When multiple devices in a network are configured to use CoS to provide differentiated services.
C.When a device is used to connect to another autonomous system.
D.When CoS is used to classifiy traffic as low priority.
第6题：
A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of
A.water
B.babbitt
C.iron or steel
D.acids
第7题：
A. Network Sequence Caching (NSC)
B. Molecular Sequence Caching (MSC)
C. Network Sequence Reduction (NSR)
D. Molecular Sequence Reduction (MSR)
第8题：
When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work
A.remains the same
B.is reduced
C.is increased
D.is eliminated
第9题：
● Since RAM is only active when the computer is on, your computer uses disto store information even when the computer is off. Which of the following itrue? （74）
（74）
A．When your computer is on, only RAM is used to store information
B．When your computer is on, only disk drives are used to storinformation.
C．When your computer is off, only RAM is used to store information
D．When your computer is off, only disk drives are used to storinformation.
第10题：
Which three types of optimization does the WX 60 device perform when Exchange 2000 and Outlook 2000 are used in the network? （）(Choose three.)
- A、Fast Connection Setup
- B、TCP Acceleration (AFP)
- C、Network Sequence Caching
- D、AppFlow's MAPI acceleration
- E、Molecular Sequence Reduction
正确答案:B,D,E