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【单选题】
可使血压偏低的因素是A.
紧张状态
B.
过度兴奋
C.
睡眠不佳
D.
高温环境
E.
恐惧
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【单选题】听力原文：W: Manager, I have to inform. you that there is an error in our invoice to Mr. Smith for the shoes he ordered on May 25. M: OK, just change 'carriage forward' to 'carriage paid'. We can't lose th...
A.
Invoice.
B.
Shoes.
C.
Carriage.
D.
Error.
【单选题】If the gyrocompass error is east，what describes the error and the correction to be made to gyrocompass headings to obtain true headings?
A.
The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true
B.
The readings are too low and the amount of the error must be subtracted from the compass to obtain true
C.
The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
D.
The readings are too high and the amount of the error must be subtracted from the compass to obtain true
【单选题】In TDM system，if the data of one channel is error, how to apply error control technique?
A.
retransmit entire TDM frame
B.
neglect the error
C.
retransmit the data of error channel separately
D.
retransmit data of error channel together with the data of the other correct channel
【单选题】关于“道”，以下说法错误的是( )
A.
老子认为“道”是宇宙万物本源
B.
老子的“道”和《易经》中的“易”字有异曲同工之妙
C.
老子在《道德经》中给“道”已经下了清晰明确定义
D.
“无”和“有”都是老子用来指称“道”
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