$诺贝尔能源(NBL)$ 8-K - Current report Filed: 2017-03-01 AccNo: 0000072207-17-000022 Size: 86 KBItem 1.01: Entry into a Material Definitive AgreementItem 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 网页链接