Fair and(1) competition in government procurement around the world is good business and good public policy. Competitive pricing, product(2)and performanceimprovements result from competitive practices and help ensure that government authoritiesget the best (3)for the public they serve.

空白（1）处填（）

A.open

B.continue

C.dependent

D.reliable

天然气甘醇吸收法脱水的吸收剂用的最广泛的是（）。

A、二甘醇

B、三甘醇

C、四甘醇

D、五甘醇