___39___ is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network. ___40___, an application-layer protocol, authenticates each peer in an IPSec transaction. IKE negotiates security policy, determining which algorithm may be used to set up the tunnel. It also handles the exchange of session keys used for that one transaction.

Networks that use ___41___ to secure data traffic can automatically authenticate devices by using by using ___42___, which verify the identities of the two users who are sending information back and forth. IPSec can be ideal way to secure data in large networks that require secure connections among many devices.

Users deploying IPSec can ___43___ their network infrastructure without affecting the applications on individual computer. The protocol suite is available as a software-only upgrade to the network infrastructure. This alows security to be implemented without costly changes to each computer. Most important, IPSec allows interoperability among different network devices, PCs and other computing systems.

43（）

A. secure

B. relation

C. script

D. strict

患者，女性，48岁，发现患2型糖尿病2个月余。测空腹血糖9.5mmol/L，餐后2小时12.3mmol/L，BMI28.9kg/m²；糖化血红蛋白8.8%。

该患者控制血糖的目标是（）

A.空腹静脉全血血糖4.4～6.1mmol/L，非空腹血糖4.4～8.0mmol/L

B.空腹静脉全血血糖6.1～7.1mmol/L，非空腹血糖8.0～9.0mmol/L

C.空腹静脉全血血糖6.5～7.1mmol/L，服糖后2小时血糖7.5～11.1mmol/L

D.空腹静脉全血血糖7.0～9.0mmol/L，服糖后2小时血糖7.5～11.1mmol/L

E.空腹静脉全血血糖7.1～8.1mmol/L，服糖后2小时血糖8.0～11.0mmol/L