卫生行政部门对工作场所职业病危害因素的强度或者浓度超过国家职业卫生标准的，可以进行以下处理，

America is waging a war against terrorism ______ a large scale.

A．at

B．to

C．with

D．on

America is waging a war against terrorism ______ a large scale.

A．at

B．to

C．with

D．on

America is waging a war against terrorism ______ a large scale.

A．at

B．to

C．with

D．on

America is waging a war against terrorism ______ a large scale.

A．at

B．to

C．with

D．on

When did radio come into the common American household in a large scale？

A．In the World War I.

B．In the middle of 1920s.

C．By the middle of 1930s.

D．In the 1950s.

The world's first large electronic computer (1946) ______.

A．was built after the World War Ⅱ

B．was used for over 10 years

C．contained 25000 valves

D．could perform only 10000 calculations per second

A．Baby Boomer.

B．Lost Generation.

C．Yuppies.

D．Dinks.

A．Baby Boomer.

B．last Generation.

C．Yuppies.

D．Dinks.