单相异步电动机启动一般有电阻分相启动、电容分相启动和（）。 ["单相启动","单三相启动","多极启动","罩极启动"]
The EMP table has some discrepancy in data entry with a particular employee ID. You execute the query as shown in the Exhibit to retrieve all versions of the row that exist between two SCNs.View the Exhibit. Which two statements about the results of the query shown in the Exhibit are correct? （）(Choose two.) [" The LAST_SCN value in the first row is NULL, which means that the versions of the row still exist at SCN 6636300."," The LAST_SCN value in the second row in NULL, which means that the version of the row still exists at SCN 6636300."," The LAST_SCN value in the third row is 6636280, which means that the version of row exists above SCN 6636280."," The LAST_SCN value in the second row is NULL, which means that the version of the row no longer exists because it was deleted."]
总投资2亿元以下且总库容在10亿m3以下的大中型和单位库容（每立方米）建设投资大于4元的小型病险水库除险加固工程，可直接编制（）。 ["初步设计","可行性研究报告","施工设计","以上都不对"]
以下问句中哪些是错误的？（） ["油比重较大时粘度大，流动点为-3至+3℃左右","天燃气含甲烷在70%以上","油层水和采水井中采上来的地下水相比较氯根要低"]
黄先生，45岁。触电后心脏骤停，初期复苏虽成功，但患者意识丧失，需进行二期复苏使用复苏药物首选的给药途径是（） ["心内注射","气管内滴注","臀大肌注射","肘静脉注射","皮下注射"]
好氧微生物需要氧气作何用？充氧效率与微生物生长有什么关系？
