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A swift current occurring in a narrow passage connecting two large bodies of water which is produced by the continuously changing difference in height of tide at the two ends of the passage is called a(n)（）.
A . hydraulic current
B . rectilinear current
C . rotary current
D . harmonic current
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A swift current occurring in a narrow passage connecting two large bodies of water，which is produced by the continuously changing difference in height of tide at the two ends of the passage，is called a（）.
A . hydraulic current
B . rectilinear current
C . rotary current
D . harmonic current
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Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
A . cylinder liners and piston rings
B . main bearings
C . crankpin bearings
D . turboblower
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After making the required notification that a large oil spill into the water has occurred，the FIRST action should be to（）.
A . apply straw or sawdust on the oil
B . contain the spread of the oil
C . throw grains of sand into the oil
D . have the vessel move out of the spill area
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While troubleshooting an EIGRP routing problem you notice that one of the company routers havegenerated a large number of SIA messages. What are two possible causes for EIGRP Stuck-In-Active routes？（）
A . Some query or reply packets are lost between the routers
B . The neighboring router starts receiving route updates from this router
C . A failure causes traffic on a link between two neighboring routers to flow in only one direction（unidirectional link）
D . The neighboring router stops receiving ACK packets from this router
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From small businesses to large-scale enterprises， which two best describe how the Cisco UnifiedWireless Network reduces overall operational expenses？（）
A . extends networkQoS throughout the network
B . simplifies management of central or remotely locates access points
C . ensures implementation of the most recent security protocols
D . streamlines wireless LAN management
E . extends features for optical traffic network service
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From small business to large-scale enterprises， which two best describe how the Cisco Unified Wireless Network reduces overall operational expenses？ （）
A . extends networkQoS throughout the network
B . simplifies management of central or remotely located access points
C . ensures implementation of the most recent security protocols
D . streamlines wireless LAN management
E . extends features for optical traffic network service
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Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the （）.
A . exhaust gas temperature system
B . exhaust load system
C . constant or pulse pressure system
D . constant volume system
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The design of the connecting rod large end bearing is similar to that of the mainbearings Whats the meaning of "that" in the sentence above?（）
A . the connecting rod
B . large end bearing
C . the main bearing
D . the desig
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Two men were（）a large log over the rough ground with the help of a rope.
A . pushing
B . drawing
C . dragging
D . carrying
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A customer has two separate storage islands and is planning to implement an SVC to provide forFlashCopy between the two islands. What is the minimum number of inter-switch links （ISLs） thatare required？（）
A . 0
B . 1
C . 2
D . 4
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A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must （）
A . line up the engine fore restarting with light diesel oil
B . reposition the fuel injection cam
C . change the intake and exhaust valve cam positions
D . place the starting cam in the intermediate positio
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Which three are true about the large pool for an Oracle database instance that supports shared serverconnections?（）
A . Allocates memory for RMAN backup and restore operations
B . Allocates memory for shared and private SQL areas
C . Contains a cursor area for storing runtime information about cursors
D . Contains stack space
E . Contains a hash area performing hash joins of table
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While troubleshooting an EIGRP routing problem you notice that one of the routers have generated a large number of SIA messages. What are two possible causes for EIGRP Stuck - In -Active routes?（）
A . Some quer y or reply packets are lost between the routers.
B . The neighboring router starts receiving route updates from this router.
C . A failure causes traffic on a link between two neighboring routers to flow in only one direction(unidirectional link).
D . Th e neighboring router stops receiving ACK packets from this router.
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In Singapore, nearly two-thirds of the main island is less than 15 meters above sea level.
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In Singapore, nearly two-thirds of the main island is less than 15 meters above sea level.
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Scientists believe that a large meteor hit the earth thousands of years ago.
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The first portion of the colon (the ____) , is a pouch that is situated below the place where the large and small intestines join (ileocecal junction).
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It was 3:12 a.m. when nine-year-old Glenn Kreamer awoke to the smell of burning. Except for the crackling of flames somewhere below there was not a sound in the two-storey house at Baldwin, Long Island.
With his father away on night duty at a local factory, Glenn was worried about the safety of his mother, his sister Karen, 14 and his 12-year-old brother Todd. He ran downstairs through the smoke filled house to push and pull at Karen and Todd until they sat up. Then he helped each one through the house to the safety of the garden. There, his sister and brother, taking short and quick breaths and coughing, collapsed on the lawn.
The nine-year-old raced back into the house and upstairs to his mother's room. He found it impossible to wake her up. Mrs. Kreamer, a victim of the smoke, was unconscious, and there was nobody to help Glenn carry her to the garden. But the boy remained calm and, as a fireman said later, "acted with all the self-control of a trained adult."
On the bedroom telephone, luckily still wording, Glenn called his father and, leaving Mr. Kreamer to telephone the fire brigade and ambulance service, got on with the task of saving his mother.
First he filled a bucket with water from the bathroom and threw water over his mother and her bed. Then, with a wet cloth around his head he went back to the garden.
He could hear the fire engine coming up, but how would the firemen find his mother in the smoke-filled house where flames had almost swallowed up the ground floor？
Grasping firmly a ball of string from the garage, Glenn raced back into the house and dashed upstairs to his mother's room. Tying one end of the string to her hand he ran back, laying out the string as he went, through the hall and back out into the garden.
Minutes later he was telling fire chief John Coughlan: "The string will lead you to mother." Mrs. Kreamer was carried to safety as the flames were breaking through her bedroom floor.
Why did Glenn run downstairs first？
A．He wanted to find out what was happening.
B．He was worded about his mother's safety.
C．He wanted to save his sister and brother.
D．He went to see if his father had come back from work.
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There was no way to measure strength of the earthquake that killed the most people because the Richter Scale wasn't large enough to measure it.
A．Y
B．N
C．NG
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In paragraph 2, the author indicates that a large variety of chipmunk species exist in western North America because of
A．a large migration of chipmunks from eastern North America in an earlier period
B．the inability of chipmunks to adapt to the high mountainous regions of eastern North America
C．the ecological variety and extremes of the West that caused chipmunks to become geographically isolated
D．the absence of large human populations that discouraged species formation among chipmunks in the East
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When most people refer to multimedia, they generally mean the combination of two or more continuous media, usually with some user(115). In practice, the two media are normally audio and video, this is,(116)plus moving(117).It should be' obvious by now that transmitting multimedia material in uncompressed form. is completely out of(118). The only hope is that massive compression is possible. Fortunately, a large body of research over the past few decades has led to many compression techniques and algorithms that make multimedia transmission(119).
A．display
B．games
C．help
D．interaction
E．pictures
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You should spend about 20 minutes on this task. The two maps below show an island, before and after the construction of some tourist facilities. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.
<img src='https://img2.soutiyun.com/ask/uploadfile/10656001-10659000/6b3ce58323fcf4e76301896a1cb77887.png' />
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The two large islands that make up the British Isles are______.
A．Britain and Scotland
B．Scotland and Ireland
C．Great Britain and Ireland
D．Great Britain and Northern Ireland
