下列检查结果中，最能反映慢性肾炎病人肾实质严重损害的是（）

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问题单项选择题

A.尿蛋白明显增多

B.尿中白细胞明显增多

C.尿中红细胞明显增多

D.尿中出现管型

E.尿比重固定于1.010左右

答案

参考答案：E

单项选择题

Certificates are （71） documents attesting to the （72） 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 （73） someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an （74） date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital （75） 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．signature

B．mark

C．stamp

D．hypertext

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单项选择题

在同一农田上两种或两种以上的作物从平面上，时间上多层次利用空间的种植方式通常称为（）。

A.套作

B.间作

C.混作

D.立体种植

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