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【简答题】
机器可靠性的高低用__来衡量。
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A.
以RNI作为切点,将低估人群营养素摄入不足的比例
B.
食物频数问卷资料可用于评价群体摄入量是否适宜
C.
锌摄入不足的概率可以使用EAR切点法进行评价
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A.
snake
B.
bird
C.
tiger
D.
evil
【多选题】内有效防治黏虫的剂型有
A.
胃毒剂
B.
内吸剂
C.
触杀剂
D.
拒食剂
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A.
tell the train to proceed
B.
tell engineers to move at restricted speed.
C.
tell engineers stop immediately .
D.
tell engineers to reduce its speed to 35miles per hour and prepare to stop at the next signal.
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A.
indicates that the train may proceed at restricted speed.
B.
indicates that the train may proceed.
C.
indicates that the train stop immediately .
D.
indicates that the train should reduce its speed to 35miles per hour and prepare to stop at the next signal.
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我是认真的
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