The brain finds it best to keep smell receptors（ ）for unfamiliar and emergency signals such as the smell of smoke,which might indicate the danger of fire.

单选题

The brain finds it best to keep smell receptors（ ）for unfamiliar and emergency signals such as the smell of smoke,which might indicate the danger of fire.

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单选题

It matters little who finds the truth ------ the truth is found.

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单选题

finds a channel busy.in the 1-persistent method,after the station finds the line idle,it sends its frame immediately.this method has the （ ） chance of collision because two or more stations may find the line （请作答此空） and send their frames immediately. In the nonpersistent method , a station that has a frame to send （ ） the line . If the line is idle , it sends immediately If the line is not idle , it waits a （ ） amount of time and then senses the line again.The nonpersistent approach （ ） the

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材料题

s the brain receives signals from the eyes or a lit-tle later as the brains high-level thinking processes get involved.Radel recruited 42 students with a normal body mass index. On the day of his or her test,each student was told to arrive at the lab at noon after three or four hours of not eating. Then they were told there was a delay. Some were told to come back in 10 minutes;others were given an hour to get lunch first. So half the students were hungry when they did the ex-periment and the o

答案解析

材料题

s the brain receives signals from the eyes or a lit-tle later as the brains high-level thinking processes get involved.Radel recruited 42 students with a normal body mass index. On the day of his or her test,each student was told to arrive at the lab at noon after three or four hours of not eating. Then they were told there was a delay. Some were told to come back in 10 minutes;others were given an hour to get lunch first. So half the students were hungry when they did the ex-periment and the o

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