Which of the items stated is typically the most expensive method of improving QoS across WAN links？（）

A . route B . lsattr C . netstat D . ifconfig

A . approximate B . approximately C . about D . similar

A . overload B . the odds of the load C . the default of parts D . overload and the odds of the load

A . making the repair list, booking spare parts and special tools for the dock repair B . shutting off all of the SW valves to outboard C . the sketches or diagrams used for the dock repair D . cleaning up the oil tank and boiler before enter the dock

A . keep all systems in normally running B . the main engine is stand-by C . shut off the starting air bottle outlet valve D . pay attention to the changes of the system parameter

A . Stack vulnerabilities B . Heap overflows C . Software overflows D . Buffer overflow

A . A. gender B . B. number C . C. case D . D. voice

A . Learning B . Spanning C . Listening D . Forwarding E . Initializing F . Filtering G . Permitting

A . Completed， Deposited， Released， Shipped B . Completed， Released， Shipped， Deposited C . Deposited， Released， Shipped， Completed D . Released， Shipped， Completed， Deposited E . Released， Shipped， Deposited， Completed

A . hull cleaning B . derusting and painting C . the maintenance of boiler D . docking and undocking

A . order list B . repair list C . store list D . spare parts list

A．Turing Award. B．Turing Machine. C．Turing Test. D．The plan for ACE.

A.Higher tuition fees for undergraduate studies. B.Admissions approval from the bar association. C.Pursuing a bachelor’s degree in another major. D.Receiving training by professional associations.

A．Pupils can use computers to do their homework. B．Advanced techniques may bring both benefits and harms to our society. C．The distinction between micros and mainframes has become blurred. D．A great variety of information sources are available on computer networks.

A．The Botanic Garden has twenty-five thousand plants in total. B．The Botanic Garden provides medicine for the visitors. C．A visitor can move seemingly from one part of Earth to another in just a few seconds. D．It has rare and endangered plants, too.

A．It has been a leader in the global economy. B．It's hard for the United States to keep the original economic position forever. C．The United States owns others a lot of money. D．Its economy will grow more than any other country in the world over next two years. 此题为多项选择题。