从H、C、O、Na、Ca五种元素中,选择适当的元素填写符合下列要求的物质的化学式

题型:填空题

问题:

从H、C、O、Na、Ca五种元素中,选择适当的元素填写符合下列要求的物质的化学式:

(1)常用于扑灭火灾的固态氧化物     ;(2)食醋中含有的一种酸             

(3)常用来改良酸性土壤的碱          

(4)说“碱”不是碱,但其水溶液呈碱性的一种盐              

(5)由60个原子构成的形似足球的分子              

考点:化学反应方程式的书写化学图标化学反应方程式的配平化学反应方程式的意义
题型:填空题

信息匹配

        有5个人各自在寻找夏威夷的一个小岛度假。请阅读下列相关信息,并按要求匹配信息。请阅读下列有关夏威夷各岛屿的介绍:

     A. Maui is a magical place. It now offers exceptional vacation activities. Experience sunrise at the top

of Haleakala Crater, play on championship golf courses, browse historic Lahaina town for pearls and

other treasures, and relax at worldclass resorts along whitesand beaches at Kaanapali, Wailca, Makena,

and Kapalua.

     B. The surfers and skyscrapers of Waikiki Beach are worldfamous, but the USA Arizona Memorial

at Pearl Port, downtown Honolulu's historic Lolani Palace and thriving Chinatown, and the Polynesian

Cultural Center also attract Oahu visitors. And sunset at Waimea Bay is unforgettable.

     C. The Big Island goes by several nicknames, including Orchid Island, thanks to its tropical rainforests, and volcano island, a nod to stillactive Kilauea. The Big Island also includes the 13,792foot Mauna Kca.

     D. Kauai is Hawaii's oldest and most tropical island. From its far beaches beneath the Na Pali coast

cliffs to Waimea, from mystical Hanalei to Bali Hai mountain, this is a place of unequalled beauty. Strange

species flock to the Kilauea Point National Wildlife Refage, while vacationers prefer the sunny Poipu

Beach and Prineeville resort areas.

     E. There's no public transport on the tiny island, Lanai, but you can rent a fourwheeler and drive 100

miles of paved and unpaved roads, past uncrowded beaches. Despite its size, Lanai offers a large variety

of activities, including hiking through ancient ruins, horseback riding, golf.

     F. Molokai is more undisturbed and less developed than Hawaii's other islands. Its distant park,

Kalaupapa National Historical Park, can be reached by hiking, on muleback, or by a small plane. Those

who drive on Molokai's coastal highway meet St. Joseph's church and tropical gardens, ancient temples

and a rainforest, and scenic waterfalls.

以下是五人的情况说明,请匹配符合各人要求的最佳去处。

     1. Tom hopes to spend his holiday on an island where he can enjoy the beautiful scenery of tropical

rainforests. He also looks forward to having a chance to look at an active volcano because he has never

seen one as a geography student.

     2. Maggie is interested in biology and she likes all kinds of animals. She wants to visit an Island with

the longest history so that she can see the most unusual animals.

     3. Steven likes to experience the pleasure of riding mule and wants to see ancient temples and beautiful waterfalls besides a rainforest.

     4. Catherine dislikes modern forms of transport. She thinks it is not good for the protection of the

environment. So she prefers an island providing vehicles which bring no pollution to the island. She hopes

to experience all sorts of activities. Horseriding is her favourite.

     5. Mike has an interest in the culture of Polynesia and likes the scenery with tall buildings standing on

the beach. He prefers to see sunset.

题型:填空题

比较水蒸气与热空气传热介质的温度及菜品特征。

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治疗肾着使用哪首方剂()

A.麻子仁丸

B.旋覆花汤

C.苓桂术甘汤

D.甘姜苓术汤

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谈判助手的主要职责?

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脊髓中大α神经元支配()

A.慢肌纤维

B.快肌纤维

C.慢肌和快肌纤维

D.梭内肌纤维

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