某同学欲称取13.4g食盐.称量时,他把砝码放在左托盘上,把食盐放在右托盘上,则他实际称取食盐的质量为( ).A.12.6g B.13g C.13.4g D.13.8g
问题描述:
某同学欲称取13.4g食盐.称量时,他把砝码放在左托盘上,把食盐放在右托盘上,则他实际称取食盐的质量为( ).
A.12.6g B.13g C.13.4g D.13.8g
答
某同学欲称取13.4g食盐.称量时,他把砝码放在左托盘上,把食盐放在右托盘上,则他实际称取食盐的质量为( ).
A.12.6g B.13g C.13.4g D.13.8g