下列表述正确的是（）。 ["申请进口废物作原料利用的企业必须是依法成立的企业法人，并具有利用进口废物的能力和相应的污染防治设备。","进口废物前，废物进口单位应事先取得国家环境保护局签发的《进口废物批准证书》。废物进口单位与境外贸易关系人签订的进口废物合同中，必须订明进口废物的品质和装运前检验条款；","进口废物，必须由中国检验检疫机构指定或认可的其他检验机构实施装运前检验，检验合格后方可装运。","进口废物，装运前不需要检验，只要到岸检验合格即可。"]
You configure your Windows 2000 Professional portable computer to redirect your My Documents folder to your home folder. You want to ensure that you can access all of your files in you’re my Documents folder when you are not connected to the network. What should you do？（） ["Use Windows Explorer to enable offline files.","Use Windows Explorer to create shortcut to access offline files folder as desktop.","Use Windows Explorer to configure the properties of your home folder to be available offline.","Use synchronization manager to configure your home folder to be available offline.","Create a shortcut in my network places to access your home folder."]
对实体的怀疑
（）促进唐菖薄提早开花。 ["多施肥","短日照处理","短夜处理","高温处理"]
凝集素检验是用已知抗原去检测血痕中未知抗体，判定血型。
请写出，气焊时防止气孔的主要措施。
