患儿，3岁。高热、抽搐急诊入院。体检：体温39.9℃，脉搏114次/分，呼吸25次/分。

病区护士为其准备（）。

A.备用床

B.暂空床

C.急救床

D.麻醉床

E.手术床

(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．ASK

B．PSK

C．FSK

D．FDM