Ultrasonic sounds produce pulsed signals______various defects in metal can be de

游客2023-11-12 60

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

解析定语从句。for which表示目的；of which表示所属；as a result of which相当于表示由其引导的定语从句与其所修饰的主句构成因果关系；by means of意为“通过(某种方式)”。

转载请注明原文地址:https://tihaiku.com/zcyy/3182004.html

相关试题推荐

随机试题

最新回复(0)

Evidencecameup______specificsoundsarerecognizedbybabiesasyoungassixm