采用收益法测算房地产价格时，公式表示（）。 A.房地产净收益按一固定数额逐年递增 B

Make sure to turn off the gas after you take a bath, which would ___ cause danger.

A．therefore

B．somehow

C．otherwise

D．meanwhile

主动脉瓣关闭不全最不可能出现的体征是（）

A.毛细血管搏动征

B.主动脉瓣区第二心音亢进

C.主动脉瓣区叹气样舒张期杂音

D.枪击音和杜氏双重杂音

E.心浊音界呈靴形

数据处理的最小单位是

A) 数据
B) 数据元素
C) 数据项
D) 数据结构

Asynchronous Transfer Mode (ATM) is a (16) that promises to change the fabric of local and wide area communications.

The key advantage of ATM is the capability to move voice, data, graphics and (17) at speeds of up to 2 gigabits per second.

An ATM switch allows you to create a (18) network that is completely independent from the (19) configuration of the network.ATM uses a (20) called cell switching to convert data into fixed length cells of 53 bytes each, so they can be switched very quickly and efficiently.

（18）是（）

A. technology

B. video images

C. logical

D. physical