A. but B. whereas C. however D. while
A. Economic B. Political C. Public D. Institutional
A. lonely B. alone C. itself D. herself
A. 工程经济纠纷的调节与仲裁 B. 投标报价的编制和审核 C. 工程投资估算的审核与批准 D. 工程概算的审核与批准
A. as B. to C. for D. by