高层建筑的剪力墙是 （ ）

A. 房屋的主要承重墙
B. 房屋非承重墙体
C. 可以拆除
D. 经过装饰工程师同意可以拆除

建筑职业人的不规范行为可能导致房屋不安全。

A. 对
B. 错

The Grand Canyon in north-western ___ ____ is one of nature's most impeessive sights.

A. Utah
B. Arizona
C. Nevada
D. Idaho

The United States went to war with ___ ____ in 1812, the last war fought between these two countries.

A. Britain
B. France
C. Spain
D. Mexico

In 1932, in the depth of the depression, the American people chose ___ ____ as their next president who promised a "new deal" to get America out of depression.

A. Theodore
B. Franklin Roosevelt
C. Woodrow Wilson
D. Herbert Hoover

给水管道的布置形式按水平干管的设置位置和方式分为哪几种？

A. 下行上给方式
B. 上行上给方式
C. 上行下给方式
D. 环状式

电力危险

起搏器

有毒的

腐蚀的