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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-25 16:40:20 发布人：wongrs | |
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nbsp;vapor above the liquid surface becomes dense r as the evaporated molecules are added to it. The combination of temperature an d pressure ( 38 ) the densities become equal is ( 3 9 ) the critical point. Above the critical point the liquid and the gas can no longer be ( 40 ); there is a single, undifferentiated fluid phase of uniform density. 26. A. in B. on C. under D. beyond 27. A. fills B. be filled C. filling D. to fill 28. A. intends B. tends C. inclines D. contends 29. A. however B. nevertheless C. so D. therefore 30． A. in the event of B. in the case of C. with a view to D. with reference to 31. A. having described B. described C. describing D. to have described 32. A. made up of B. consisted of C. constituted of &nb
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