John, a junior workflow developer, has approached you for advice on a workflow process that he is defining. He is unclear about the implications of selecting the Runnable checkbox while defining the Process Activity. What advice would you offer?（） Runnable allows the workflow engine to compile the process.。 Runnable allows the process to be included as a stand-alone subprocess.。 Runnable allows the workflow engine to check its status during process execution.。 Runnable allows the workflow engine to define this as a top-level process and initiate it。
电池在放电过程中，将（）转化为电能，供电器使用。 化学能。 太阳能。 核能。 机械能。
国际资本流动对全球经济、金融的影响有（） 促进全球经济效益的提高。 缓和某些国家的内部和外部冲击。 成为国际金融市场动荡不安的主要因素。 给政府制定货币金融政策增加了难度。
The CUSTOMERS table has these columns: Which statement finds the rows in the CUSTOMERS table that do not have a postal code?（） SELECT customer_id, customer_name FROM customers WHERE postal_code CONTAINS NULL;。 SELECT customer_id, customer_name FROM customers WHERE postal_code = '________';。 SELECT customer_id, customer_name FROM customers WHERE postal_code IS NULL;。 SELECT customer_id, customer_name FROM customers WHERE postal code IS NVL;。 SELECT customer_id, customer_name FROM customers WHERE postal_code = NULL。
关于项目施工成本核算对象划分的说法，正确的有（）。 一个单位工程由几个施工单位共同施工，各自核算该单位工程中自行完成的部分。 可将规模大、工期长的单位工程划分为若干部位，但仍应以单位工程作为核算对象。 同一建设项目，属同一结构类型，由同一施工单位在同一地点施工，开竣工时间相近的若干单位工程，可以合并作为一个成本核算对象。 改建、扩建的零星工程，可以将开竣工时间相近，属于同一建设项目的各个单位工程合并，但仍应以各个单位工程作为成本核算对象。 土石方工程可以根据实际情况和管理需要，以一个单项工程为成本核算对象。
You need to restore some files from a file system. The file system was backed up from a snapshot.
Which command will correctly restore these files？（）
