Ultrasonic sounds produce pulsed signals______various defects in metal can be de

游客2024-10-26  10

问题 Ultrasonic sounds produce pulsed signals______various defects in metal can be detected.

选项 A、for which
B、of which
C、as a result of which
D、by means of which

答案 D

解析
转载请注明原文地址:https://tihaiku.com/zcyy/3818022.html
最新回复(0)