在用显微镜观察蚕豆叶表皮是若视野太暗无法观察清楚应采取的措施是 A换用平面反光镜b调节细准焦螺旋c调节遮光器上的光圈d换用 Template




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tomski在用显微镜观察蚕豆叶表皮是若视野太暗无法观察清楚应采取的措施是 a换用平面反光镜b调节细准焦螺旋c调节遮光器上的光圈d换用 coloring