以下建筑材料中,()的防火性能最差。 A.铝酸盐水泥 B.硅酸盐水泥 C.聚苯乙烯

题型:单项选择题

问题:

以下建筑材料中,()的防火性能最差。

A.铝酸盐水泥

B.硅酸盐水泥

C.聚苯乙烯

D.水玻璃

考点:工程材料土木工程材料综合练习土木工程材料综合练习题库
题型:单项选择题

人类病毒性心肌炎的重要病原体是

A.炭疽芽胞杆菌

B.溶脲脲原体

C.柯萨奇B组病毒

D.伯氏疏螺旋体

E.汉坦病毒

题型:单项选择题

上下牙列最广泛接触时,下颌所处的位置称为()

A.颌间距离

B.垂直距离

C.息止间隙

D.息止颌位

E.正中

题型:单项选择题

If you walk slowly through downtown Helsinki(赫尔辛基)during the day, taking in the splendid 19th century buildings, white boats and noise of passing trams(有轨电车), you will start to understand why it is called a city of two colors: white and blue.

The sea is always present in Helsinki. When you take a walk over the great open space of the central square, you will hear seabirds screaming. When you take the tram ,suddenly and unexpectedly, you are faced with a calm, shining blue sea. You may notice that people in Helsinki do not rush about as in other cities. Instead ,they walk along the roads, politely letting other people by.

An usual way to see Helsinki for the first time is to start out by the boats. You will walk by the elderly women selling fish and vegetables in the market square and find yourself in front of a beautiful park. You may enjoy a pleasant walk in the park for a few hours and then take the tram. Trams are the perfect way to get around(四处走动)in Helsinki. Watching the old houses, parks, theatres, churches, shops, restaurants and people in the streets, you may have a slightly sad film feeling to it.

The pale summer nights are another wonder in the city. Following the waterfront(滨水区)of the city after sunset, you couldn’t help stopping and listening to the sweet silence, interrupted only by the screaming seabirds and leaving fishing boats.

However, in some way. Helsinki is also the most modern city in northern Europe. You will surely want to visit the white Glass Palace, the modern art museum, and all those extremely popular cafes and design stores.

小题1:Helsinki is called a city of two colors mainly because of the colors of its ____________

A.19th century buildings, boats and parks

B.19th century buildings, boats and seabirds

C.old houses, parks and trams

D.old buildings, boats and the sea小题2:The best way to see most of Helsinki is to go___________

A.by boat

B.by bus

C.by tram

D.on foot小题3:The 19th century buildings, the white Glass Palace, popular cafes and design shops in Helsinki  all show that Helsinki is __________

A.both splendid and traditional

B.both quiet and noisy

C.both historical and modern

D.both old and new小题4:This passage is most likely to be found in___________

A.a story-book

B.a geography textbook

C.a research report

D.a travel magazine

题型:单项选择题

阿司匹林小剂量服用可防止脑血栓形成,是因为它有哪项作用

A.使PC合成酶失活并减少TXA2的生成

B.稳定溶酶体膜

C.解热作用

D.抗炎作用

E.水杨酸反应

题型:单项选择题

保险营销是以“无形的保险产品”为载体,以消费为导向,以满足消费者需求为中心,运用整体手段,将保险产品转移给消费者,以实现保险公司长远经营目标的系列活动。因此,保险销售人员的职业道德、能力、心态、甚至仪表仪态都会影响保险公司在消费者心中的形象。

保险销售人员的良好礼仪通常包括()

①恭敬的态度;

②整洁的仪表;

③非常专业的言辞;

④得体的举止。

A.①②③

B.①②④

C.①③④

D.①②③④

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