上海市位于下列哪一个工业区（ ） A．沪宁杭工业区 B．珠江三角洲工业区 C．京

患者，女，初产妇，足月临产。检查：先露头已入盆，胎膜未破，宫口开大1cm，胎心140次／分。下列护理措施不正确的是（）。

A.用肥皂水灌肠

B.鼓励少量多餐

C.在宫缩时测血压

D.清洁外阴并备皮

E.每4小时测一次生命体征

设n阶矩阵A与对角矩阵Λ相似，则下述结论中不正确的是

A．A-kE～Λ-kE(k为任意常数)．

B．A^m～Λ^m(m为正整数)．

C．若A可逆，则A^-1～Λ^-1．

D．若A可逆，则A～E．

检验继电保护、安全自动装置和仪表、计算机监控系统，需将高压设备停电的情况应（）。

A.填用第一种工作票

B.填用第二种工作牌

C.填用停、送电操作票

D.无需填用工作票

地球上岩浆的发源地一般认为是在（）

A.外地核

B.岩石圈下部

C.软流层

D.地壳下部

(56) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.

(57) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.

(58) is an approach preferred by cable TV providers. In this solution the fiber terminates at an opto-electrical converter and the final segment is a shared coaxial cable.

(59) is a device used to connect two separate network that use different communication protocol.

(60) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

（58）是（）

A.ADSL

B.FTTC

C.HFC

D.FTTH