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(2015•德州)海水淡化可采用膜分离技术.如图一所示,对淡化膜右侧的海水加压,在其左侧得到淡水,其原因是海水中的水分子可以透过滤液淡化膜,到其他各种离子不能透过.请回答:

(1)采用膜分离技术淡化海水的原理,与化学实验中常见的____操作相似.

(2)对淡化膜右侧的海水加压后,海水中溶质的质量分数会____(填”增大“、”减小“或”不变“)

(3)海水中含有大量的氧化钠,图二示氯化钠的溶解度曲线,据此可知盐场从海水中得到食盐晶体利用的方法是____结晶(填”降温“或”蒸发“).

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过滤,增大,蒸发

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    Come to the AG Society's expedition (探险) program and you will surely get unique experiences!

SWIM WITH THE HUMPBACKS OF TONGA

Dairen Jew and his team are your hosts for an unforgettable AG Society adventure, filled with in-water meetings with humpback whales (座头鲸) in the Kingdom of Tonga's group of islands.

WHO: Darren Jew's Whales Underwater

DATES: 26 September-4 October 2018

COST: $ 5,450 per person

BOOKINGS: Call 0756679413, email reservations @ whalesunderwater.com or visit whalesunderwater.com

11-DAY KIMBERLEY COAST CRUISE

The AG Society is partnering with APT to present an exciting voyage along the Kimberley coastline from Broome to Darwin. Expedition cruising offers the easiest way to explore the Kimberley. Guests on this 11-day voyage will go ashore, explore natural wonders, meet traditional owners, see rock art and spot wildlife.

WHO: APT

DATES: 6-16 September 2018

COST: $ 13,395 per person

BOOKINGS: Visit kimberleywilderness.com.au

LIGHTNING RIDGE FOSSIL DIG

The AG Society offers you a chance to hunt for fossils (化石). Guided by experts, you'll go to special locations, seeking new fossils for the collections of the Australian Opal Centre. Your discoveries will further establish these museum collections as a world-class scientific and cultural resource. There are also a series of lectures on mining history, fossils, dinosaur hunting and new dinosaurs.

WHO: Australian Opal Centre

DATES: 20-25 August 2018

COST: $ 2,200 per person, including all activities and lunches and dinners

BOOKINGS: Call 0427904587, email dig @ australianopalcentre.com or visit australian opalcentre. com

AG DKVIL ARK FXPEDITION

Come and join Tim Faulkner for a unique hands-on experience with this Tasmanian devil (袋獾) feeding program in the beautiful Barrington Tops of NSW. You'll get to see devils up close as you assist with feeding individuals. In addition to working with the animals, there'll be opportunities to explore the area's natural treasures and spot local wildlife. Don't miss your chance to get involved in this important conservation effort.

WHO: Devil Ark

DATES: 24-26 November 2018

COST: $ 1,750 per person

BOOKINGS: Call 0243408610, email info@ devilark.org. au or visit devilark.org. au