病例系室性心动过速，无心力衰竭。下列处理哪项不正确()

A．利多卡因0.5～1.0mg/kg静脉滴注或缓慢推注

B．普鲁卡因酰胺静脉缓慢注射

C．盐酸美西律(慢心律)缓慢静注

D．异丙基肾上腺素

E．应用直流电同步电击转复心律

(41) is a protocol that a host uses to inform a router when it joins or leaves an Internet multicast group.

(42) is an error detection code that most data communication networks use.

(43) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.

(44) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.

(45) is an identifier of a web page.

（44）是（）

A. ISDN

B.X.25

C. Frame Relay

D. ATM