【单选题】passage 1 question 17
A.
She fought bravely in a series of military operations.
B.
She developed X-ray facilities for military hospitals.
C.
She helped to set up several military hospitals.
D.
She made donations to save wounded soldiers.
【单选题】Unit 1 Test yourself p. 18-21 Question No.1
【单选题】( ) 是用来限制被测 实际 要素变动的区域。
【单选题】进口食品、食品添加剂以及食品相关产品应当符合
【判断题】形位公差带用来限制被测实际要素变动的区域。它是一个几何图形,只要被测要素完全落在给定的公差带内,就表示被测要素的形状和位置符合设计要求。
【简答题】Passage 1 Question 16 1 Question 17 2 Question 18 3
【判断题】几何公差带是用来限制零件被测要素的实际形状、方向、位置的变动,通常是平面的区域。