Pig iron, wrought iron, and steel contain iron carbides made up of ______ of carbon.

admin2004-12-29  46

问题 Pig iron, wrought iron, and steel contain iron carbides made up of ______ of carbon.

选项 A、amounts are different
B、different amounts that
C、different amounts
D、which amounts are different

答案C

解析
转载请注明原文地址:https://kaotiyun.com/show/Yd8O777K
0

随机试题
最新回复(0)