What’s the advantage when using the satellites?（）

A . Cranes are able to pick up and drop loads over a greater spotting area B . Increased safety because the deck is clear of running and standing rigging C . Simplicity of operation of the crane by its operator D . All of the above

A . more economic B . larger capacity on oil treatment C . less costive D . more capable of separating emulsified oil

A .  128MB B .  256MB C .  512MB D .  1024MB

A .  It supports admission control that allows a network to reject or downgrade new RSVP sessions if one of the interfaces in the path has reached the limit （that is， all reservable bandwidth is booked）. B .  RSVP signals QoS requests per individual flow. In the request the authorized user （authorization object） and needed traffic policy （policy object） are sent. The network can then provide best-effort delivery to these individual flows. C .  RSVP streamlines communication by making it unnecessary to inform network devices of flow parameters （IP addresses and port numbers）. D .  Because of the stateful RSVP architecture， continuous signaling does not have to occur. E .  The flow-based approach is scalable to large implementations， such as the public Internet， because RSVP tracks each individual flow.

A . it avoids split-horizon issues with distance vector routing protocols. B . IP addresses can be conserved if VLSM is not being used for subnetting. C . A multipoint interface offers greater security compared to point-to-point subinterface configurations. D . The multiple IP network addresses required for a multipoint interface provide greater addressing flexibility over point-to-point configurations.

A . The message can be directed to the desired location B . The message can follow the earth’s curvature C . The quality of message can not be affected by climatic D . The range of the message extend and the quality of reception is improved

A . They are less expensive B . They are smaller for equivalent pumping ability C . They pump more cargo in less time D . All of the above

A . A copy of the frame is forwarded out all switch ports other than the port the frame was received on. B . The frame is transmitted on the native VLAN. C . The switch sends a NACK segment to the frame’s source MAC address. D . The frame is dropped.

A . 1 B . 2 C . 4 D . 6 E . 8

A . Optimized processing of error notification B . Optimized processing of bandwidth requests C . Optimized processing of content delivery D . Optimized processing of content request

A. Checking the understanding. B. Evaluating the activity. C. Providing feedback. D. Organizing the activity.

A.to live there permanently B.to find a better job to support herself C.to stay there for half a year

Sensitive to color Can assess heading Can identify small targets Can see light configurations Can assess ship types Can identify conspicuous marks Can identify flashing lights Has better discrimination Can see changing weather patterns Can see effect of sea on vessel Not affected by blind arcs (if observer moves)． 问题： BLIND ARCS mean ______ ． A.the arcs from which one can not see certain objects B.the arcs which are blind C.the black arcs D.the arcs from which one can see certain objects This paragraph is a ______ ．A.a clause of a contract B.an explanation of advantage of eyes over radar C.a requirement from a government D.an article of Colreg DISCRIMINATION means the ______ ．A.provision B.dimension C.distinction D.permission The eye is more ______ than radar．A.distinguishable B.reasonable C.controllable D.reliable 请帮忙给出每个问题的正确答案和分析，谢谢！

A．Asmall hole in one of his teeth． B．A D ental maculA C．A wedge shaped defect． D．A special disease

A．your self-awareness B．your willingness to develop C．your honesty D．your family 此题为多项选择题。

A．Who are you B．Who is it C．What is your name D．Can I ask whose calling

A．Producing the first true movie for the system B．Describing the natural world in a new way C．Making a second-generation displaying system D．Calling in a big investment for a major exhibit