Check that the doors, hood and trunk all open smoothly and close with solid sound.
检查（车）门、发动机罩和后备箱打开是否平稳，关闭是否牢固。
2
Check any pipes that run close to outside walls. Put some fiberglass insulation or rockwool between the pipe and the wall to help keep the cold away from the pipe.
检查靠近外墙的所有管路，并在管路和墙体之间包覆玻璃钢保温层或石棉，以确保低温远离管路。
3
Finally, execute the statement, check for errors, and close the connection.