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问题 选择题

在工业上，下列提高燃料利用率的措施中，与燃料充分燃烧无关的是（　　）

A．把煤炭磨成粉状进行燃烧

B．把柴油喷成雾状进行燃烧

C．给锅炉鼓风，增加空气供给量

D．给锅炉外壳装隔热层，减少热量散失

答案

答案：D

单项选择题

会厌根部和室带鳞癌，同侧声带固定，左颈中深有一3cm×4cm淋巴结肿大，全身未见转移癌。此肿瘤分期为（）。

A.T3N2M0

B.T2N3M0

C.T2N2M0

D.T3N1M0

E.T2N1M0
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单项选择题

(66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed,length bit string. (67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection. (68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an opt~electrical converter and the final segment is a shared coaxial cable. (69) is a device used to connect two separate network that use different communication protocol. (70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

A．RTP

B．RTTP

C．FTP

D．NNTP
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