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