智慧职教: The original thickness of the carbon strips is ( ) and when the thickness reaches 3mm , the carbon strips must be replaced.
举一反三
- 智慧职教: Components must be replaced when ______.
- When determining the thickness of the compression layer in the same type of soil layer, the thickness of each layer should not be too large, generally not more than 0.4b (b is the width of the base) or 1 to 2m
- When carbon is added to iron in proper _________ the result is steel.
- Carbon dioxide is released when you ________ .() A: exhale B: inhale
- Carbon chains can rotate around a double bond (carbon=carbon or C=C).