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【单选题】
在中国,如果要布置WLAN的蜂窝式网络,IEEE 802.11g 2.4GHz的频段中课布置( )个不重叠信道。A.
3
B.
4
C.
11
D.
14
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反馈参考答案：
举一反三
【判断题】While RAM memory may not be large enough to hold all of the data that a program needs, secondary storage can be arbitrarily large.
A.
正确
B.
错误
【单选题】The attitude of the Federal Bureau of Investigation shows that ______.
A.
enough data are yet to be collected from various ethnic groups to confirm the unlikelihood of two DNA samples coming from two individual members
B.
enough data of DNA samples should be collected to confirm that only DNA samples from the same person can match
C.
enough data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples coming from the same person
D.
additional samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to come from the same person
【单选题】The attitude of the Federal Bureau of Investigation shows that ______.
A.
enough data are yet to be collected from various ethnic groups to confirm the unlikelihood of two DNA samples coming from two individual members
B.
enough data of DNA samples should be collected to confirm that only DNA samples from the same person can match
C.
enough data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples coming from the same person
D.
additional samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to come from the same person 61. The National Academy of Sciences holds the stance that ______ .
【单选题】Scientists engaged in animal studies have collected
A.
enough data on how animals speak human languages
B.
none of the data on animals? ability to communicate
C.
1ess data on how animals communicate between species
D.
some data on animals? tendency to talk to humans
【单选题】重大事故隐患是指可能造成人身死亡事故，重大及以上电网、设备事故，由于供电原因可能导致重要电力用户()的事故隐患。
A.
一般人身、电网事故
B.
重大电网、设备事故
C.
重大生产事件
D.
严重生产事故
【简答题】Not until enough data is collected_____________________(我们才有希望得出可靠的结论)．
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