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Digital Selective Calling means a technique using（）which which enables a radio station to establish contact with, and transfer information to another station or group of stations and complying with the relevant recommendations of the CCIR.
A . digital codes
B . code messages
C . norse codes
D . distress message
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Fire and lifeboat stations are required to be listed on the （）.
A . ships articles
B . muster list
C . bunk card
D . forecastle card
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（）means a technique using digital codes which enables a radio station to establish contact with, and transfer information to another station or group of stations and complying with the relevant recommendations of the CCIR.
A . DSC
B . MSI
C . EGC
D . NBDP
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All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
A . every station in one chain to transmit at the same time
B . each station to transmit without reference to another station
C . on-line transmission of single-line transmitters at the same time
D . each station to only depend on the master for synchronization and signal ratio
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To obtain accuracy in fixing by DF，（）and three stations should be used.
A . parallel bearings
B . long-range bearings
C . short-range bearings
D . cross bearing
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The Coast Radio Stations are found in（）.
A . Admiralty List of Lights and Fog Signals
B . Admiralty Maritime Communications
C . Admiralty List of Radio Signals
D . Admiralty Digital List of Light
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In the Oil Record Book, a comprehensive list of operational items are grouped into operational sectionsEach section is codified by a/an （）.
A . number
B . abbreviation
C . letter
D . All of the above
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You are the Exchange administrator of the Xxx Corporation’s Exchange 2010 organization.You have configured a Database Availability Group （DAG） named DAG01.You need to change the replication port used by the DAG.What are two things that you must do？（）
A . Use the Exchange Management Console （EMC） to change the TCP port used for replication.
B . Use the Exchange Management Shell to change the TCP port used for replication.
C . Modify the Windows Firewall exceptions on each member of the DAG to open the replication port.
D . Modify the Windows Firewall exceptions on the witness server of the DAG to open the replication port.
E . Use the Exchange Management Shell to configure the DAG IP address of 0.0.0.0.
F . Use the Exchange Management Shell to change the DAG IP address to 127.0.0.1.
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In a high-availability network, which command, when placed on ports that have connected end stations, will allow you to prevent delays in service for end stations by placing a port in blocking mode?（）
A . enable backbone fast
B . enable uplink fast
C . disable portfast
D . enable portfast
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Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
A . countries
B . states
C . names
D . grou
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Philanthropic programs launched by Haier Group are ______.
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It is often done by a group of teachers who are to teach the _______ course.
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The power stations are built in Neo mainly because ______.
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在SELECT语句中，当使用OBDER BY子句时，一定要使用GROUP BY子句。（ ）
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GROUP BY 子句总是跟在WHERE 子句后面,当WHERE子句缺省时,不能出现GROUP BY子句。（ ）
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Japanese are to a large extent controlled by their peer group rather than by their manager.
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以下关于Having和Group By描述正确的是（）
A、HAVING子句只有与GROUP BY子句连用才能对分组进行约束。只使用HAVING子句而不使用GROUP BY子句是没有意义的
B、可以引用任何出现在选择列表中的列
C、不要与HAVING子句一起使用ALL关键字，因为HAVING子句会忽略ALL关键字而返回只满足自己条件的分组
D、可以引用查询表的任意列
此题为多项选择题。
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SQL的GROUP BY子句用来分组输出结果（）
是
否
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After a survey by a group of international experts, the beaches at Sharm el-Sheikh are to reopen, but only after strict new safety measures are in place. There will be continuous patrols by boats close to shore.
Watch towers are being established along the beaches, manned by professional divers, equipped with binoculars to scan for any sign of sharks. Swimmers will have to remain within designated areas, and rules against feeding sharks or any other sea life are being reinforced.
The international shark experts concluded that recent attacks were carried out by more than one shark, so waiting until the culprit was caught seems not to have been an option before opening the beaches, especially as the peak Christmas season approaches. But tourists may be understandably nervous and at least some cancellations are reported.
26. What probably happened before the re-opening of the beach？_________
A. It must have been destroyed by a rainstorm.
B. It must have been visited by a dangerous shark.
C. Some people must have come here for suicidal.
D. There must have been a serious pollution.
27. Which of the following is NOT correct？_________
A. International experts surveyed the beach before its reopening.
B. Patrol boats are used to keep the beach under close watch.
C. People are not allowed to come to the beach.
D. Tourists do not come to the beach any longer.
28. Which of the following is NOT included in the safety measures？__________
A. Patrol boats.
B. Watch tower.
C. Professional divers.
D. International experts.
29. What can people do after the reopening of the beach？_________
A. Swim in designated area.
B. Feed sea animals except sharks.
C. Celebrate Christmas with professional divers.
D. Learn how to dive from professional divers.
30. Which of the following is correct？_________
A. Several sharks may attack together.
B. Sharks only attack at night.
C. The beach will be reopened till the culprit is caught.
D. The international shark experts patrol the beach every day.
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当输气站间距离缩短一半时，输气能力将增大（）%。When the distance between gas transmission stations is cut in half, the gas transmission capacity will increase by 41%.
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The refusal to broadcast "Saving Private Ryan" by several TV stations shows that
A．the movie features lots of swearing.
B．media firms have intensified censoring.
C．media firms were afraid of huge fines.
D．the film was defined as indecent.
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Most radio and television stations in the United States are commercial stations, 【26】______ is to say, they earn their money from 【27】______ or commercials. Private companies purchase radio and television 【28】______ from the commercial stations in order to 【29】______ their products. Cable television stations are also 【30】______ stations, though they do not usually have advertisements. 【31】______ watch cable stations, people must pay the cable TV company a certain amount of money each 【32】______ .
Public radio and television stations, on the 【33】______ hand, do not have advertisements and people do not have to 【34】______ to watch them. These stations gain their money 【35】______ the government, private companies, and from some of the 【36】______ who watch or listen to their programs. The 【37】______ government and some large corporations give 【38】______ , large gifts on money, to the public stations. Small businesses and people also 【39】______ money to their local public radio and television stations.
ABC, CBS, and NBC are the three 【40】______ commercial radio and television 【41】______ in the United States. Most local commercial radio and TV stations 【42】______ their programs from one of these national networks. 【43】______ example, each network had a TV news program in the evening, 【44】______ the local stations broadcast in addition to their 【45】______ local news programs.
【26】
A．that
B．this
C．it
D．which
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In any country the wages commanded by laborers who have comparable skills but who work in various industries are determined by the productivity of the least productive unit of labor, i.e., that unit of labor which works in the industry which has the greatest economic disadvantage. We will represent the various opportunities of employment in a country like the United States by symbols: A, standing for a group of industries in which we have exceptional, economic advantages over foreign countries; B, for a group in which our advantages are less; C, one in which they are still less; D, the group of industries in which they are least of all.
When our population is so small that all our labor can be engaged in the group represented by A, productivity of labor (and therefore wages) will be at their maximum. When our population increases so that some of the labor will have to be set to work in group B, the wages of all labor must decline to the level of the productivity in that group. But no employer, without government aid, will yet be able to afford to hire labor to exploit the opportunities represented by C and D, unless there is a further increase in population.
But suppose that the political party in power holds the belief that we should produce every thing that we consume, that the opportunities represented by C and D should be exploited. The commodities that the industries composing C and D will produce have been hitherto obtained from abroad in exchange for commodities produced by A and B. The government now renders this difficulty by placing high duties upon the former class of commodities. This meads that workers in A and B must pay higher prices for what they buy, but do not receive higher prices for what they sell.
After the duty has gone into effect and the prices of commodities that can be produced by C and D have risen sufficiently, enterprisers will be able to hire labor at the wages prevailing in A and B, and establish industries in C and D. So far as the remaining laborers in A and B buy the products of C and D, the difference between the price which they pay for those products and the price that they would pay if they were permitted to import those products duty-free is a tax paid not to the government, but to the producers in C and D, to enable the latter to remain in business. It is an uncompensated deduction from the natural earnings of the laborers in A and B. Nor are the workers in C and D paid as much, estimated in purchasing power, as they would have received if they had been allowed to remain in A and B under the earlier conditions.
When C and D are established, workers in these industries______.
A．receive higher wages than do the workers in A and B
B．receive lower wages than do the workers in A and B
C．are not affected so adversely by the levying of duties as are workers in A and B
D．receive wages equal to those workers in A and B
