《安全生产法》规定，生产经营单位不得将生产经营项目、场所、设备发包或者出租给不具备安全管理能力的单位或者个人。
参考答案：对
Is this the second time that you _________ the Summer Palace?[ ]
A. visit
B. are visiting
C. had visited
D. have visited
简要回答宋代哥窑的艺术特点。
