填空 请找出下列句子中需要首字母大写的单词并将正确答案填入空中。Just as an alarm started ringing, Cindy came out of the building shouting, “help! There’s a fire in the barn!”
填空 请找出下列句子中需要首字母大写的单词并将正确答案填入空中。Did you know that your dad invited aunt Lori to come to visit us?
1988年美国人斯科特克伦普(Scott Crump)发明了下面哪种3D打印工艺?
A. FDM
B. SLA
C. SLS
D. ABS
1993年麻省理工学院教授Emanual Saches发明的三维印刷技术的简称是哪一个?
A. FDM
B. 3DP
C. LOM
D. SLA