根据我国法律，下列哪种合同是具有法律效力的合同( )A．通过欺骗对方签订的合同 B

检查额窦病变的首选体位是（）

A.斯氏位（Stenever's）

B.柯氏位（Caldwell's）

C.瓦氏位（Watef's）

D.瑞氏位（Rhees's）

E.劳氏位（Law's）

王爷爷做一个无盖的木箱。底面是边长为5分米的正方形，高是4分米。这个木箱要用多少平方分米的木板？这个木箱能装土多少立方米？

通货膨胀时期，并不是所有价格和工资都按同一比率变动，而是相对价格发生变化。这种相对价格变化引致财富和收入的再分配，因而某些公司可能从中获利，而另一些公司可能蒙受损失。（）

Questions 63 to 67 are based on the following passage: ( 10分 )　　Architecture is the art or science of designing and constructing buildings with durable materials following certain canons.　　Historically, architecture has followed a succession of recognizable styles that may, for example, be identified as Gothic, Baroque, or Neo-Classical; or it has a specific style associated with a particular culture, such as Greek, Roman, or Egyptian.　　Architectural style, even if it is a country house, factory, hotel, airport, or religious building, reflects the values as well as the needs of the society that produces it. However, it is governed not only by taste and aesthetic interest but also by many practical considerations.　　The availability of suitable materials is closely linked to the development of skills and influenced the shapes of buildings. Carpentry developed in areas of the world that were thickly forested. Although it has become scarcer, timber remains an important building material.　　In other areas, stone and marble were chosen for important monuments because they are fireproof and durable. Stone is also a sculptural material; stone architecture was often integral with stone sculpture. The use of stone has declined today because a number of other materials, such as glass, steel, and concrete are more economical to use and assemble.　　In regions where both timber and stone were scarce, earth itself was used as a building material. Mud or clay was compact into walls or made into bricks that were dried in the sun. Later, bricks were baked in kilns, which gave them greater durability.　　Building with stones or bricks is called masonry. The elements cohere through sheer gravity orthe use of mortar. The Romans found a natural cement that, combined with insert substances, produced concrete. In the early 19th century a truly waterproof cement, the key ingredient of modem cement, was developed. So, it is said that Romans are great contributor to the development of architecture.

What does the word "reflects" ( in Paragraph 3) mean

A．influences

B．affects

C． shows

D．both A and B

要获得洁净的蒸气，必须降低锅水的（）

A、排污量

B、加药量

C、含盐量