【单选题】思者,女性,56岁。因COPD行超声波雾化吸入,吸入后,下列不需要消毒的物品是
【判断题】印制电路板按电路板所用基板材料分为刚性、柔性和刚-柔性印制电路板。
【单选题】We should eat a lot of fruit and vegetables ___________ . [ ]
【单选题】Health is very important to us, We should eat more vegetables and fruit instead of _____ rich food. [ ]