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问题 单项选择题

对于飞机标志（LOGO）叙述不正确的是（）

A.与导航灯共用开关

B.当开关打开时LOGO灯就肯定亮

C.标志灯的工作状态与起落架位置，SLAT.FLAP位置有关

D.照射垂直安定面

答案

参考答案：C

多项选择题

面神经颈面干的分支有（）

A.颧颞支

B.上颊支

C.下颊支

D.下颌缘支

E.颈支
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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．signature

B．mark

C．stamp

D．hypertext
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