超声脉冲的计时精度应为()A.1S B.0.1S C.10-3S D.10

考试题库2022-08-02  39

问题 超声脉冲的计时精度应为()A.1SB.0.1SC.10-3SD.10-6S

选项 A.1S
B.0.1S
C.10-3S
D.10-6S

答案 D

解析
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