为有利于石灰土强度的形成，用作路面基层的石灰土应在冰冻前（）完工。 30天。 45天。 60天。 15天。
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？
Give; What is the result?（） b3。 b8。 b13。 f3。 f8。 f13。 Compilation fails.。 An exception is thrown at runtime.。
适用于资产评估的假设有（）。 重置成本假设。 公开市场假设。 收益现值假设。 清算假设。 交易假设。
When discussing plant maintenance with plant maintenance managers, frequently the topic of using preventive maintenance (PM) comes up. If this is used extensively and the PM work orders are regularly completed, what is told by this about the operation?（） It is likely that equipment will break down frequently.。 It is likely that equipment will break down infrequently.。 It shows that maintenance is performed on an as needed basis.。 It shows that there are frequent crises when it comes to maintaining equipment.。
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（）
