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【判断题】
电阻温度系数 α 是热电阻的重要特性,和金属热电阻相比 , 半导体热敏电阻的 α 小、且为正值。A.
正确
B.
错误
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举一反三
【单选题】The nurse is working in a support group for clients with acquired immunodeficiency syndrome (AIDS). Which point is most important for the nurse to stress
A.
Avoiding the use of recreational drugs and alcohol.
B.
Refraining from telling anyone about the diagnosis.
C.
Following safer-sex practices.
D.
Telling potential sex partners about the diagnosis, as required by \r\nlaw.
【单选题】肺成熟时L/S比值应达到
A.
L/S》2.0
【简答题】双电控电磁阀与单电控电磁阀的区别在于? 双电控电磁阀的两个电磁线圈能不能同时为通电?
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