题目内容
冷冻可有效抑制微生物活动,使用液氮中快速冷冻水样或-20℃冷冻水样是检测溶解氧样品保存的首选,可保存数月。
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对于采集到每一个样品,一般清洁水样要求在72h内进行分析, 轻污染水样48h内进行分析,较重污染水样12h内进行检测分析。
选填大写字母序号即可（A.B.C.D.）Choose the one which can fully express the meaning of the words given below:1.Earlier she had dispatched her maid on an inventederrand and…A. creative B. innovativeC. falseD. disclosed2.The house detective’s piggyeyes surveyed her sardonically from his gross jowled face.A. small and narrowB. dirty C. funnyD. wiggy3.His gaze moved on to sweep the spacious, well-appointed room, encompassing the Duke who faced them uncertainly, his back to a window.A. enchant B. include C. deride D. avid4.The words spat forth with sudden savagery, all pretense of blandnessgone.A. politeness B. gentility C. boldness D. unscrupulousness5.The Duke of Croydon — three centuries and a half of inbredarrogance behind her — did not yield easily.A. innate B. inhabited C. inhibited D. inbuilt6.… Ogilvie, who had declared he would appear at the Croydons’ suite an hour after his cryptictelephone call…A. hidden B. strange C. mysterious D. sacred7.On a hunchI went over the garage and took a quiet look-see at your car.A. doubt B. double C. suspect D. intuitive feeling8.Nor was either of them adept at using maps.A. adapt B. adopt C. add D. expert9.Her eyes were riveted on his face, her handsome, high-cheekboned features set in their most imperiousmold.A. imperial B. impertinent C. impervious D. haughty10. The important thing was to consider all eventualities.A. causality B. casualtyC. possibilityD. peculiarity
In New Orleans, the Duke and the Duchess occupied a quite luxurious suite in a large hotel.
One day evening, when the Duke and the Duchess drove back from a restaurant, they knocked down a woman and her child.
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