有毒物质主要通过物理损伤使生物体遭受损害。
张女士，56岁。因左乳肿块在门诊手术室进行手术治疗。为防止局麻药中毒反应，下列措施哪项是正确的（） 药物直接注人血管。 一次性给足量局麻药。 普鲁卡因中加少量肾上腺素。 发生毒性反应时应减少用药量。 虚弱患者对药物反应弱，应增加药量。
A customer is currently using EMC’s Mirrorview/A. Their primary site is 400 kilometers away fromthe secondary site， and they have an RPO of 4 hours. What is the IBM equivalent product？（） Global Copy。 Sync Mirror。 Metro Mirror。 TPC for Replicatio。
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Users in your production database complain that they are getting the following error message while trying to insert rows into the ORDERS table： ERROR at line 1： ORA-01654： unable to extend index USERS.ORDERS_IND by 8 in tablespace INDEXES While investigating， you find that the INDEXES tablespace has run out of space and there is no more free space on the disk where the data files are available. Which two actions could you perform to overcome this error without affecting the queries that are currently being executed？（） drop and re-create the index。 coalesce the ORDERS_IND index。 coalesce the INDEXES tablespace。 drop and re-create the ORDERS table。 rebuild the index online and move it to another tablespace。
英国经济学家舒马赫认为，小型企业存在和发展的原因之一是（）
