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【简答题】
Due to a dock strike, I was 1)__________ in Vera Cruz on my way from Mexico City to Yucatan. To kill time, I sat down in the coolness of the plaza and 2)__________ a drink. A red-haired beggar attracted my attention. He was skinny. His ragged clothes barely 3)__________ together. He stood at the tables, one after another, silent and immobile, with 4)__________ in his eyes. When he came to me, I shook my head. In the evening, I saw again that beggar standing 5)__________ before one table after another. It occurred to me that I had come across him before. But I couldn’t tell when an where. The second day at Vera Cruz wore on. I 6)__________ for the beggar and 7)__________ him very carefully. I 8)__________ my brains, trying to remember when I might have met him, but could 9)__________ none of the circumstances. A policeman who tried to protect the public from the 10)__________ of the beggars gave him a whack. And suddenly I remembered everything except his 11)__________ 。 Twenty years ago, I was in Rome and often went to a restaurant 12)__________ by some American and British art students and writers. He was only a boy among them then, good-looking but with enormous 13)__________ and with an ambition to be a writer. Being arrogant, he was not popular among us. I could never imagine that he has been 14)__________ to this frightful misery. I found him and went up to him. “Do you remember Rome?” I said. He didn’t move, nor spoke a word; it was as if I were not standing before him. I pressed a not in his hand. But he 15)__________ it up and flicked it into the air.
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参考答案:
举一反三
【单选题】成年女性维生素 A的RNI值为
A.
700 μgRE/d
B.
800μgRE/d
C.
900μgRF/d
D.
1200μgRE/d
【单选题】喷气发动机的单位耗油率是指产生一单位推力每小时所消耗的燃料,单位是()
A.
kg/(N•h)
B.
kg/(KN•h)
C.
kN/(W•h)
D.
N/(kg•h)
【简答题】涡轮喷气发动机的单位耗油率是指产生单位功率每小时所消耗的燃油量。()
【判断题】在马克思主义民族史观的立场上看,民族范畴的上限是原始社会末期。
A.
正确
B.
错误
【单选题】喷气发动机的耗油率的单位是 ______ 。
A.
kg/s
B.
kg/(N·h)
C.
kg/( kw·h)
D.
ml/h
【单选题】梯度回波(GRE)与自旋回波(SE)相比( )
A.
GRE幅值较SE小,图像信噪比高
B.
GRE幅值较SE小,图像信噪比低
C.
GRE幅值较SE大,图像信噪比高
D.
GRE幅值较SE大,图像信噪比低
E.
GRE幅值较SE小,图像信噪比相同
【单选题】在GRE Tunnel接口视图下,配置隧道封装模式为GRE的完整命令为()。
A.
tunnel protocol gre
B.
tunnel gre
C.
tunnel-protocol gre
D.
protocol gre
【多选题】下面关于GRE协议描述正确的是()
A.
GRE协议是二层VPN协议
B.
GRE是对某些网络层协议(如:IP,IPX等)的数据报文进行封装,使这些被封装的数据报文能够在另一个网络层协议(如:IP)中传输
C.
GRE协议实际上是一种承载协议
D.
GRE提供了将一种协议的报文封装在另一种协议报文中的机制,使报文能够在异种网络中传输,异种报文传输的通道称为tunnel
【简答题】在马克思主义民族史观的立场上看,民族范畴的下限在于_____。
【单选题】有关GRE配置说法错误的是()
A.
即使GRE隧道一端配置端到端校验(gre checksum),另一端未配置校验,该GRE隧道仍然能正常建立,并传输报文。
B.
GRE隧道两端如果配置了gre key,则改关键字必须完全一致,否则报文将被丢弃。
C.
GRE隧道两端默认配置了keep alive功能。
D.
GRE的keepalive功能缺省时间为10秒,缺省超过次数为3次。
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