首过效应可减少经体循环到达靶器官组织的外源化学物数量或可能减轻毒性效应。
简述土地经济供给的影响因素。
What is true about sequences? （） Once created, a sequence belongs to a specific schema.。 Once created, a sequence is linked to a specific table.。 Once created, a sequence is automatically available to all users.。 Only the DBA can control which sequence is used by a certain table.。 Once created, a sequence is automatically used in all INSERT and UPDATE statements.。
Which of the following resources could be used to obtain the latest IBM DS Storage ManagerUser’s Guide？（） InfoCenter web site。 Announcement letter。 IBM Redbook web site。 IBMTechline/Partnerline。
跨栏跑的成绩取决于（）、（）及（）。
A small bio-tech company is interested in implementing an IBM System Storage solution. Which ofthe following tools can be used to help justify the cost of our solution to a customer?（）
