皮皮学，免费搜题
登录
搜题
【单选题】
下列钢号中属于高速工具钢的是( )。A.
W18Cr4V
B.
9SiCr
C.
CrWMn
D.
GCr15
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】阅读理解。 As we know, there are differences between western culture and Chinese culture. We can see differences when we pay attention to the words that are used. Let's look at the words about describing a...
【简答题】阅读理解。 As we know, there are differences between Western culture and Chinese culture. We can see differences when we pay attention to the way some words are used. Let's look at the words about animals ...
相关题目：