多项选择题 Whichthreearedescribedinthestandardwebapplicationdeploymentdescriptor？（）

单项选择题 Which makes the local EJB component accessible to the web components in the web application deployment descriptor？（）

单项选择题 A web component accesses a local EJB session bean with a component interface of com.example.Account with a home interface of com.example.AccountHome and a JNDI reference of ejb/Account. Which makes the local EJB component accessible to the web components in the web application deployment descriptor？（）