手阳明“标”部位于()。 ["A、背俞与舌下两脉","B、颊下,挟颃颡","C、背俞与舌本","D、颜下合钳上","E、腋内动脉"]
玻壳X射线管其结构各部分中,能吸收软射线有()。 ["阳极罩","铅玻璃罩","铍窗","A、B和C"]
粘滞性是引起流体运动能量损失的根本原因。
()牌号机油不能用于柴油机。 ["15W/40CD","10W/30CG","5W/30SD","20W/50CF4"]
足太阴“标”部位于()。 ["A、背俞与舌下两脉","B、颊下,挟颃颡","C、背俞与舌本","D、颜下合钳上","E、腋内动脉"]
()作用对余差无影响。