下列实验仪器不宜直接用来加热的是[ ]
A.试管
B.烧杯
C.坩埚
D.蒸发皿
答案:B
When a mis-entry()in the logbook, a red line would be drawn through that part.
A.has made
B.make
C.has been made
D.is making
房地产项目的盈亏平衡分析,有最低点分析和最高点分析两种,两者的主要差异在于平衡点的设置。( )