形位公差是由形状公差和位置公差组成。以下()属于形状公差。
A.不同轴度;
B.不垂直度;
C.不圆柱度;
D.表面跳动度。
参考答案:C
--- We will build a subway in Gangzhou before 2035.
--- Wow, ____________! Will it pass our place?
A.what an excited news
B.how excited the news is
C.what exciting news
D.how exciting news
酸碱混合指示剂都是由一种指示剂与另一种惰性染料混合而成的。