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在测盐水密度的实验中，两位同学采用了不同的实验步骤．甲同学的步骤是：Ａ．在量筒里倒入适量盐水，测出盐水的体积；Ｂ．用天平称出玻璃杯的质量；Ｃ．将量筒里的盐水倒入玻璃杯中，称出玻璃杯和盐水的总质量；Ｄ．算出盐水的质量；Ｅ．利用密度公式求出盐水的密度．乙同学
In the experiment of measuring salt density, the two students adopted different experimental steps. A student’s steps are: A. Pour appropriate amount of saline into the measuring cylinder and measure the volume of brine; B. Use a scale to weigh the quality of the glass; C. Pour the salt water in the cylinder into the glass and weigh out the total mass of the glass and salt water; D. Calculate the quality of salt water; E. Use the density formula to find the density of brine. B classmate