结焦性能最差的煤是（）。 A.肥煤 B.1/3焦煤 C.焦煤 D.瘦煤

根据短文和首字母填空（每题0.5分，共5分）

Bill and Simon were good friends. One summer they were on h___1____.They wanted to sail around the Caribbean Sea in their boat for two weeks. During their trip, they saw many whales. Bill and Simon were very e__2___ because they wanted to see them very much. Unluckily, w_3____ they were watching them, the whales began to hit the side of the boat.

Suddenly, w___4__ started coming in, and they realized that they were in trouble. They q__5___ jumped into the lifeboat before the boat sank(沉没), and watched it disappear under the sea.

Luckily, they had enough food and water for about twenty d__6____. They also had a fishing line and a machine which could change sea water i___7__ drinking water. These two things helped them to survive during their terrible experience.

For the next fifty days they caught about ten fish a day and a__8___ them. They saw about twenty ships, but although they waved and shouted when the ships were passing , n__9___ saw them. They were becoming weaker and weaker. Then just as they were beginning to l___10___ hope,a fishing boat saved them.

公共政策的产生必须有三个初始条件，或者说必须具备三个核心要素：一是公共问题的形成；二是（）；三是公共强制机构的出现。

A.组织的产生

B.暴力机构的产生

C.利益集团的产生

D.公民团体的产生

海南的夏天很炎热，但老师常说“心静自然凉”这种观点属于认识论上的（）

A.客观唯心主义

B.主观唯心主义

C.形而上学唯物主义

D.辩证唯物主义

情感反应性异常有几种方式，患者受刺激后突然出现情感波动，哭笑无常属于（）

A.易激惹性

B.情感爆发

C.情感脆弱

D.病理性激情

E.情感统一性异常

仓泵只以压缩空气为动力，不需要其他动力源。