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Which of the following commands is used to adjust the minperm and Maxperm values of real memory to 4% and 80%?()
A . vmtune -N4 -M80
B . vmtune -f4 -F80
C . vmtune -l4 -L80
D . vmtune -p4 -P80
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Which of the following protocols use both TCP and UDP ports?()
A . FTP
B . SMTP
C . Telnet
D . DNS
E . All of the above
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Which of the following is true regarding the use of switches and hubs for network connectivity()。
A . Switches take less time to process frames than hubs take.
B . Switches do not forward broadcasts.
C . Hubs can filter frames.
D . Using hubs can increase the amount of bandwidth available to hosts.
E . Switches increase the number of collision domains in the network.
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Maintaining the close tolerances in diesel fuel pumps and injectors requires the use of().
A . fuel/water separators
B . day tanks
C . injector test stand
D . fuel filter
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Which of the following tools should be used to report current network status and is often used to check the reliability of a network?()
A . netpmon
B . netstat
C . nfsstat
D . vmstat
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Defining an HACMP cluster using the Initialization and Standard Configuration menu is limited to the use of:()
A . IPAT via IP aliasing
B . Custom Resource Groups
C . Heartbeating over IP Aliases
D . Concurrent Capable Volume Grou
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Fresh water is used for the cooling of cylinder jackets and () of the marine diesel engine.
A . cylinder covers
B . lubricating space
C . crosshead
D . exhaust manifold
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The use of sinking and dispersing chemical agents for removal of surface oil is().
A . the most common method used in the United States
B . too expensive for common use
C . generally safe to sea life
D . authorized only with prior approval of the Federal On-Scene Coordinator
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The use of()between bags may lead to chafe and tearing of the bags.
A . strips of burlap
B . heavy paper
C . dunnage boards
D . strips of rope yar
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Which of the following protocols uses both TCP and UDP ports?()
A . SMTP
B . Telnet
C . FTP
D . DNS
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A record of the types and strengths of steels used on a ship must be included in the().
A . general plans
B . builder's documentation
C . Certificate of Inspection
D . construction portfolio
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The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of().
A . High frequency pulses
B . Combinations of high and low frequency pulses
C . The same frequency for all stations in a chain
D . Varied long and short pulse
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What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to ().
A . Mention signal stations and ice,storm,traffic and port signals
B . Give the international numbers of lights
C . Give the correction of the lights and fog signals
D . Give the information on the lights and fog signal
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Which three statements correctly describe the functions and use of constraints? ()
A . Constraints provide data independence.
B . Constraints make complex queries easy.
C . Constraints enforce rules at the view level.
D . Constraints enforce rules at the table level.
E . Constraints prevent the deletion of a table if there are dependencies.
F . Constraints prevent the deletion of an index if there are dependencies.
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177. What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to ______
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The speaker using style appeals to and emphasizes the emotional aspect of persuasion.
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4. The labels __________, __________, __________, and __________ communication are often used in discussions of intercultural communication.
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The southern or Cantonese cuisine is so popular because of the use of sauces and sugar.
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George Washington Carver found hundred of uses for the peanut, the sweet potato, and the soybean and thus stimulated the cultivation of these crops.
此题为多项选择题。
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听力原文: The hand has been a symbol through the ages and in many cultures There are hundreds of expressions-and combinations of words using hand in the English language Let us examine some of the expressions that use hand.
To get a hand in is to begin a job, to begin to know something about it. When we learned completely, it will be easy for us. We will be able to do it hands down. If we do the job well, we may end up with the upper hand. That means to be in control or to have gained complete understanding of a situation. On the other hand, if the situation gets out of hand then, it is out of control. Then we may have to hand it to someone, to let someone else take over the business. It is time for us to wash our hands, to end it up completely. You can also lend a hand to someone but without really giving up your hand. You lend a hand when you help someone. You offer them a helping hand. If someone is kind enough to lend us a hand then we surely do not want to bite the hand that feeds us. We do not want to repay his kindness by treating him badly.
The expression "to end up with the upper hand" means ______.
A.to begin a job
B.to be in control
C.to be out of control
D.to take over the business
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听力原文: The hand has been a symbol through the ages and in many cultures. There are hundreds of expressions and combinations of words using hand in the English language. Let Us examine some of the expressions that use hand.
To get a hand in is to begin a job, to begin to know something about it. When we learned completely, it will be easy for us. We will be able to do it hands down. If we do the job well, we may end up with the upper hand. That means to be in control or to have gained complete understanding of a situation. On the other hand, if the situation gets out of hand then, it is out of control. Then we may have to hand it to someone, to let some- one else take over the business. It is time for us to wash our hands, to end it up completely. You can also lend a hand to someone but without really giving up your hand. You lend a hand when you help someone. You offer them a helping hand. If someone is kind enough to lend us a hand then we surely do not want to bite the hand that feeds us. We do not want to repay his kindness by treating him badly.
The expression "to end up with the upper hand" means ______.
A.to begin a job
B.to be in control
C.to be out of control
D.to take over the business
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American high school students sink almost to the bottom in a survey of math and science literacy because too many of the high school ______ in America are not qualified.
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Runways are used for takeoff and landing of aircraft ______taxiways are used for the surface movement of aircraft associated with takeoff and landing.
A、whereas
B、but
C、while
D、though
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Which of the following is used to lyse the nucleus and release the DNA()
A.sodium dodecyl sulfate (SDS)
B.ammonium sulfate
C.ferric phosphate
D.phenol