[单选] You need to configure fine-grained access control to external network resources from within your database. You create an access control list (ACL) using the DBMS_NETWORK_ACL_ADMIN package. Which statement is true regarding the ACL created?（）

A . It is a list of remote database links stored in the XML file that are available to the users of the database.
B . It is a list of users and network privileges stored in the XML file according to which a group of users can connect to one or more hosts.
C . It is a list of users and network privileges stored in the data dictionary according to which a group of users can connect to one or more hosts.
D . It is the list of the host names or the IP addresses stored in the data dictionary that can connect to your database through PL/SQL network utility packages such as UTL_TCP.

液压系统发生故障的主要原因常常是（） A、液压油受到污染。 B、系统动力不足。 C、油管断裂。 D、电机停转。了解国际电子商务立法概况有哪些作用？下列哪项组合是错的（）血友病时，活化部分凝血活酶时间延长。严重肝病时，凝血酶原时间延长。继发性DIC早期，3P阳性。原发性血小板减少紫癜时凝血酶消耗试验正常。 Which of the following statements is false？（） There can be more than one master catalog for a store。 A sales catalog is a subset of the master catalog。 The master catalog is the central place for the stores merchandise。 There can be more than one sales catalog for a store。 Multiple stores can share a master catalog。在采用市场法评估产成品及库存商品时，其中工业企业的产成品评估一般以（）为依据。卖出价。买入价。中间价。成本价。 You need to configure fine-grained access control to external network resources from within your database. You create an access control list (ACL) using the DBMS_NETWORK_ACL_ADMIN package. Which statement is true regarding the ACL created?（）

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[单选] You need to configure fine-grained access control to external network resources from within your database. You create an access control list (ACL) using the DBMS_NETWORK_ACL_ADMIN package. Which statement is true regarding the ACL created?（）

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