基础模数尺寸是指标准化的共同单位尺寸，或系统各标准尺寸的最大公约尺寸。在制定各个具体

In (66) the strength of the carder signal is varied to represent binary 1 or 0. (67) is a system that can map a name to an address and conversely an address to an name. (68) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol. (69) is an approach that enables an ATM Switch to behave like a LAN switch. (70) is an guided media which is made of glass or plastic and transmits signals in the form of light.

A．NAT

B．NCP

C．DDN

D．DNS

材质为不锈钢的空心异型材，其最大外形尺寸为50mm，最大内孔24cm

按CFR或CIF术语成交，合同中只规定装运期或交货期，而按CPT或CIP术语成交，合同中不但要规定装运期，还要规定货物到达目的地的期限。( )

起病急，神经症状消失快，一般持续数分钟，多无意识障碍者，应首先考虑的是

A．短暂性脑缺血发作
B．脑血栓
C．脑栓塞
D．脑出血
E．蛛网膜下腔出血

CDMA属于干扰受限系统，无线干扰的增加可能影响到系统的（）；

A.容量

B.覆盖

C.呼叫成功率

D.掉话率