Coast Guard approved buoyant work vests（）.

A . MAXIMI ZEPROTECTION B . MAXIMI ZEPERFORMANCE C . MAXIMI ZEAVAILABILITY D . MAXIMI ZESTANDBY

A . Movable ladders B . Fixed ladders C . Safety booms D . Elevator

A . loss of life B . an injury requiring only first aid C . $(SA)10，000 in property damage D . loss of equipment which doesn't reduce the vessel's maneuverability

A . Alert the watch officer that a vessel is approaching the preset CPA limit B . Warn of small targets that are initially detected closer than the outer guard zone C . Guard against target loss during critical maneuvering situations D . Sound an alarm for targets first detected within the zone

A . a Coast Guard inspector B . a registered professional engineer C . the owner or Master of the vessel D . a licensed electricia

A . interface gig3/1 spanning-tree guard root B . interface gig3/1 spanning-tree root guard C . interface gig3/1 spanning-tree root-guard D . interface gig3/1 spanning-tree root-guard default

A . Nearest Oceanographic office B . The Marine Safety Center at Coast Guard Headquarters C . National Ocean Service D . Nearest Officer in Charge，Marine Inspectio

A . the Canadian Coast Guard B . Ice Sarnia C . the Ice Navigation Center D . the icebreaker assigned to the area

A .  Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot B .  UDLD protects against STP failures caused by cabling problems that create one-way links. C .  Loop guard detects and protects against duplicate packets being received and transmitted on different ports D .  UDLD protects against unidirectional cabling problems on copper and fiber media. E .  Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.

A . Require a demonstration by the officer and the crew member B . Require a written test C . Require that an interpreter be provided D . All of the above

A . annually B . once every two years C . once every four years D . once every five year

A .  If BPDUs are not received on a non-designated port， the port is moved into the STP loop- inconsistent blocked state B .  IF BPDUs are received on a PortFast enabled port， the port is disabled. C .  If superior BPDUs are received on a designated port， the interface is placed into the root- inconsistent blocked state. D .  If inferior BPDUs are received on a root port， all blocked ports become alternate paths to the  root bride.

A . PAN-PAN B . MAYDAY C . SOS D . SECURITY

听力原文： The Coast Guard does what its name says; it guards the coasts of the United States. During a war, the Coast Guard becomes part of the United States Navy, and helps to protect against enemy attacks. In times of peace, however, The Coast Guard is part of the United States Department of Transportation. It has responsibility for many different duties. The Coast Guard can be found at many large lakes in America, as well as in coastal waters. It enforces laws controlling navigation, shipping, immigration, and fishing. It enforces other laws that affect the thousands of privately-owned boats in the United States. Coast Guard planes, boats and helicopters search for missing boats and rescue people in dangerous situations. Last year, Coast Guards men saved the lives of almost 7,000 people. The Coast Guard does scientific research on the ocean. It also uses ice-breaking boats to clear ice from rivers or lakes, so boats can travel safely. One of The Coast Guard's most important duties now is helping to keep illegal drugs out of the United States. Coast Guard boats, armed with guns, use radios and radar to find boats that may be carrying drugs. They stop the boats suspected of carrying drugs and search them, They seize the drugs and arrest the people on the boats. Last year, Coast Guardsman seized more than 800,000 kilo grams of marijuana and cocaine. And-they arrested more than 700 persons trying to bring illegal drugs into the United States. This kind of action is exiting. Most of the time, however, Coast Guardsman say they see nothing more exciting than the ocean. (33) A．Guarding the coasts of the United States. B．Being part of the United States Navy. C．Guiding people along the coast. D．Protecting people from army attack.

A：the B：the C：the

A．cautiously B．dutifully C．faithfully D．skillfully

听力原文： The climate of the west coast is the most moderate in Canada. Summers are coast and fairly dry and winters are mild, cloudy and wet. Even in mid-winter, average temperatures are usually above freezing. The central plain from the Rocky Mountains to Great Lakes is characterized by cold winters, short but hat summers, and light snow and rain.The large water-surfaces of Central and Eastern Canada produce considerable modification in the climate. Southern Ontario and Quebec experience cold, damp winters and hot, humid summers. Most of Atlantic Canada has a humid climate owing to its marine character. Nevertheless, it experiences weather systems arriving from the dry continental interior as well as from the sea. The combined influence of these systems creates some of the most variable day-to-day weather conditions to be encountered anywhere in Canada. The north-central part of Canada is usually snow-covered for more than half of the year, with a frost flee period of barely two months. Rain is relatively light. Further north, on the islands along the Arctic coast and round Hudson Bay, the land is always frozen. Average temperatures stay above freezing for only a few weeks of the year. The Arctic Islands and the northern border of the mainland do not have a summer season of the kind known in Southern Canada. (33) A．The Arctic coast. B．The west coast. C．The east coast. D．The central plain.

A．coast B．ghost

A．＄1 billion B．＄2 billion C．＄10 billion

A．with as few strings as possible B．capable of being worn on both sides C．according to each wearer s size D．confortable and light to we ar