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【简答题】
1 HDFS Client往DN01,DN02,DN03等三个不同DataNode传输10GB数据,以两种方式分别计算HDFS数据传输性能。假定HDFS中block大小为128MB,备份数为3,网络带宽为125MB/秒。 a,批量阻塞式传输,Client将128MB传递给DN01,DN01接收128MB后传输给DN02... b,非阻塞式异步传输,每个DN一边接收数据,一边传输数据。假定数据块大小为1MB,Client将1MB传递给DN01,DN01接收1MB后传输给DN02..
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【简答题】用测电笔可以辨别火线和零线,使用时手一定要接触 ,笔尖接触电线,如果氖管发光,表明接触的是 。小明同学在闭合开关后发现灯不亮,他用测电笔测试途中的 a,b,c,d 四点,只有 a 点不发光,那么可能发生的故障是 。
【单选题】The stranger seemed ________ his way.
A.
to be losing
B.
to have missed
C.
to have lost
D.
lost
【单选题】The stranger seemed _______ his way.
A.
to be losing
B.
to have lost
C.
to have missed
D.
lost
【单选题】The stranger seemed ()his way.
A.
.to be losing
B.
.to have lost
C.
.to have missing
D.
.lost
【简答题】"Now we're more than halfway; only two miles away from the tavern," said the
driver. "I'm glad of that!" answered the stranger, in a sympathetic
mood. He wanted to say more but the east wind blew cl...
【简答题】一般情形下,如何确定契税计税依据?
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【单选题】The stranger seemed ________ his way.
A.
to be losing
B.
to have missed
C.
to have lost
D.
lost