【单选题】II.Reading comprehension:Read this academic research paper selected from Journal and answer the following questions by choosing theSingle correct answerfor each question.(2*10)(文章见本单元拓展学习材料中文件名为“3单元测验...
A.
Declarative-sentence construction
B.
Nominal group construction
【单选题】_____ are commonly used in mechanical-hydraulic governor to sense engine speeds.
【简答题】如图,A、B、C、D四名同学的家在同一条直线上,已知C同学家处在A与B两家的中点处,而D同学的家又处于A与C两家的中点处,又知C与B两家相距3千米,则A与D两同学家相距______千米.
【判断题】电涡流传感器的工作原理是基于电涡流效应。
【判断题】电涡流传感器的工作原理是利用电涡流效应。