單項(xiàng)選擇題

Under what conditions would the use of a Class C fire extinguisher be preferable to a Class A extinguisher? C類火災(zāi)滅火器比A類滅火器更適用于以下哪一種情況？（）

A .When the fire involves paper products當(dāng)火災(zāi)和紙制品有關(guān)時
B .When the fire is caused by flammable products當(dāng)火災(zāi)由易燃物造成
C .When the fire involves electrical equipment當(dāng)火災(zāi)和電器設(shè)備有關(guān)時
D .When the fire is in an enclosed area當(dāng)火災(zāi)發(fā)生在一個封閉空間內(nèi)

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單項(xiàng)選擇題

The most prevalent cause of computer center fires is which of the following計算機(jī)中心火災(zāi)主要的原因是以下哪一項(xiàng)？（）

A.AC equipment 交流電源設(shè)備
B.Natural causes 自然原因
C.Electrical distribution systems 配電系統(tǒng)
D.Heating systems 供熱系統(tǒng)

單項(xiàng)選擇題

Where parties do not have a shared secret and large quantities of sensitive information must be passed, the most efficient means of transferring information is to use Hybrid Encryption Methods. What does this mean?雙方?jīng)]有共享的密鑰以及大量的敏感信息需要傳輸，最有效的用于信息傳輸?shù)牡姆绞绞鞘褂没旌蟼鬏斝畔⒓用芩惴?。這是什么意思？（）

A.Use of software encryption assisted by a hardware encryption accelerator.使用由硬件加密加速器協(xié)助的軟件加密
B.Use of the recipient’s public key for encryption and decryption based on the recipient’s private key.使用接受方的公鑰進(jìn)行加密以及使用接受者的私鑰既你想那個解密
C.Use of public key encryption to secure a secret key，and message encryption using the secret key.使用公鑰加密來加密秘密會話密鑰，并且使用秘密會話密鑰來加密信息
D.Use of elliptic curve encryption.使用橢圓曲線加密

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Under what conditions would the use of a Class C fire extinguisher be preferable to a Class A extinguisher? C類火災(zāi)滅火器比A類滅火器更適用于以下哪一種情況？（）

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The most prevalent cause of computer center fires is which of the following計算機(jī)中心火災(zāi)主要的原因是以下哪一項(xiàng)？（）

日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

Under what conditions would the use of a Class C fire extinguisher be preferable to a Class A extinguisher? C類火災(zāi)滅火器比A類滅火器更適用于以下哪一種情況？（）