统一指挥
参考答案：指一个下属人员只应接受一个领导人的命令。
This silk scarf is made in Suzhou. It feels just as as it looks.
A．beautiful
B．beautifully
C．good
D．well
在下列软膏剂的基质中，属于凝胶基质的是
A．CMC-Na
B．石蜡
C．羊毛脂
D．硅油
E．凡士林
