（） is one of the main documents which is issued byan ocean carrier.

A . main stem stop valve B . auxiliary steam stop valve C . feed check or control valve D . blow down valve

A . will not jam on the mooring line B . is stronger C . is easier to use when under heavy tension D . is safer to use when under heavy tensio

A . stuffing box diameter B . direction of rotation of the screws C . pitch of the screws D . type of driving gear

A . help preheat the air for the furnaces B . help preheat the feedwater C . protect economizer from excessive heat D . prevent excessive furnace heat losse

A . have nothing to do with B . having nothing to do with C . have much to do with D . having much to do with

A . Inefficient scavenging；twice B . Inefficient scavenging；1~8 times C . Fewer strokes in a circle；twice D . Fewer strokes in a circle；1~8 time

A、operating B、to be operated C、to operate D、operated

A.overspeed / overload B.overload / overspeed C.over torque / overspeed D.low mechanical efficiency / overload

A．the price of goods B．the kind of seafood C．the preparation of fish D．the change of the menu

A、chances B、challenges C、chains D、changes

A.Reading is an activity that involves not only intensive reading but also extensive reading. B.Reading helps us form. a larger framework of knowledge. C.Reading enriches our life experience. D.none of the above

As the mountains sank, ocean water charged over the lowest arts of the remaining land, forming a series of twisting inlets and lagoons (咸水湖) . The highest parts of the former mountain range, nearest the shore, remained as islands. ______【47】Marine fossils found here were 225 feet above sea level, indicating the level of the shoreline prior to the glacier. The 2, 500-mile-long rocky coastline of Maine keeps watch over nearly two thousand islands. Many of these islands are tiny and uninhabited, but many are home to thriving communities. Mt. Desert Island is one of the largest, most beautiful of the Maine coast islands. Measuring 16 miles by 12 miles, Mt. Desert Island was essentially formed as two distinct islands. ______【48】. For years, Mt. Desert Island, particularly its major settlement, Bar Harbor, afforded summer homes for the wealthy. Recently though, Bar Harbor has become a rapidly growing arts community as well. But the best part of the island is the unspoiled forest land known as Acadia National Park. Because the island sits on the boundary line between the temperate (温带) and sub-Arctic zones, the island supports the plants and animals of both zones as well as beach, inland , and alpine (高山 的) plants. ______【49】The establishment of Acadia National Park in 1916 means that this natural reserve will be perpetually available to all people, not just the wealthy. Visitors to Acadia may receive nature instruction from the park naturalists as well as enjoy camping, cycling, and boating. Or they may choose to spend time at the archeological museum, learning about the Stone Age inhabitants of the island. The best view on Mt. Desert Island is from the top of Cadillac Mountain. ______【50】. From the summit, you can gaze back toward the mainland or out over the Atlantic Ocean and contemplate the beauty created by a retreating glacier. A. It also lies in a major bird migration lane and is a resting spot for many birds. B. Mt. Desert Island is one of the most famous of all of the islands left behind by the glacier. C. The wealthy residences of Mt. Desert Island selfishly keep it to themselves. D. The term comes from the activity of the Ice Age. E. This mountain rises 1, 532 feet, making it the highest mountain on the Atlantic seashore. F. It is split almost in half by Somes Sound, a deep and narrow stretch of water seven miles long. (46)

A、 cost management B、 change management C、 configuration management D、 capacity management

A.migrants B.transformers C.immigrants D.emigrants

A．whether dinosaurs and space can really get kids into science B．whether the keynote speech is much too simplistic and naive C．whether passion and fancy play a key role in science learning D．whether a minister should patronize the refugees and immigrants

A、Toconform. to govermment regulations in the target market B、To conform. to geographic or chimatic conditions incuding the avliabltly C、To conform. to buyer preferences in the target market D、To conform. to standard of products in the target market