搜题请搜索小程序“爱下问搜题”
问题 单项选择题

心交感神经兴奋后，可引起

A．心率减慢、心内传导加快、心肌收缩力减弱
B．心率加快、心内传导加快、心肌收缩力减弱
C．心率减慢、心内传导减慢、心肌收缩力增强
D．心率加快、心内传导加快、心肌收缩力增强

答案

参考答案：D

单项选择题 B型题

常见于伤寒、大叶性肺炎的高热期（）

A.波状热

B.稽留热

C.不规则热

D.弛张热

E.间歇热
查看答案
单项选择题

Certificates are (66) documents attesting to the (67) of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to (68) someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a certificate also contains an (69) date, the name, of the CA that issued the certificate, a serial number, and perhaps other information. Most importantly, it contains the digital (70) of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.

A．communication

B．computation

C．expectation

D．expiration
查看答案