梅奥认为,______是通过阻止变革来保留人的价值的一种反应性企图。
参考答案:工会
She rubs her teeth with her finger _______ she wants to brush her teeth. This is done after every meal.
A.when
B.until
C.since
D.while
动脉采血不需准备的物品是()
A.5ml无菌干燥注射器、8号针头
B.无菌手套
C.肝素
D.止血带