The underlying technology that makes B-ISDN is calledA．ATMB．Frame. relayC．SDMSD．X.25 Netwo

nning PIM sparse mode. Host CKB and Host CKF are sending IGMPv2 join messages to their respective multilayer switches. Which description is correct？（）

A. Switches 1, 2, 3, and 6 will part icipate in the multicast tree once pruning has taken place.

B. Switches 2 and 6 will participate in the multicast tree once pruning has taken place.

C. Switches 1, 2, 3, and 6 will participate in the multicast tree.

D. The multicast server is the rendez vous point of the multicast tree.

编写一个程序实现小型公司的工资管理。该公司主要有4类人员.即经理（manager) .技术人员（techn

编写一个程序实现小型公司的工资管理。该公司主要有4类人员.即经理(manager) .技术人员(technician)、销售员(salesman)、销售经理(salesmanager)。这些人员都是职员(employee),有编号、姓名、月工资信息。月工资的计算方法是经理固定月薪8000元，技术人员每小时100元,销售员按当月销售额的4%提成，销售经理既拿固定月工资5000元又拿销售提成，销售提成为所管辖部门当月销售额的5%。要求编程计算月T资并显示全部信息。

system()

In considering the underlying infrastructure, it is important to keep in mind that () is not the real key.

A. technologys

B. service

C. sales

D. marketing

A. The underlying tables must have data.

B. You need SELECT privileges on the view.

C. The underlying tables must be in the same schema.

D. You need SELECT privileges only on the underlying tables.

A.appraising

B.proposing

C.hovering

D.underlying

The theory of learning underlying the Grammar-Translation Method was Faculty Psychology. The Faculty Psychologists believed that the mind of human beings had various faculties which could be trained separately.()

A.conventional

B.innumerable

C.compact

D.concise

A long call option is______.

A．the right to buy the underlying instrument

B．the right to sell the underlying instrument

C．the obligation to buy the underlying instrument

D．the obligation to sell the underlying instrument

The theory of language underlying the Grammar-Translation Method was derived from Comparative Historical Linguistics.()