下列各部分中的二氧化碳浓度由大到小的顺序是（ ） （1）空气（2）细胞（3）动脉

My aunt works ________ a newspaper _______ a reporter.

A．as, for

B．for, as

C．with, for

D．for, with

古代罗马规模最大的一次奴隶起义的领导者是[ ]

A．屋大维

B．安东尼

C．斯巴达克

D．凯撒

(71) In the strength of the carrier signal is varied to represent binary 1 or 0.
(72) is a system that can map a name to an address and conversely an address to an name.
(73) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol
(74) is an approach that enables an ATM Switch to behave like a LAN switch.
(75) 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

汉语普通话中常用音节有哪些？

冰蚀谷