京剧脸谱是一种内涵丰富的艺术表现形式。每个脸谱都是一种主色调，以显示剧中人物的性

阅读漫画《资源税改革方案上报人大》，目前有专家建议将煤炭资源税税率最高标准从1%提升至3%。这表明税收具有

A．强制性

B．自觉性

C．无偿性

D．固定性

齿辊式破碎机检修时应注意

As far as the American children are concerned, the Christmas is __________ with excitement,

happiness and gifts. [ ]

A. associated  

B. get

C. deal  

D. satisfied

如果烟丝的水分过高，则会降低烟丝的（），增加烟支的单支重量，并将影响卷烟质量。

The client with cirrhosis is put on a sodium-restricted diet and a diuretic. The nurse would expect to administer a potassium-sparing diuretic. Which of the follow is a potassium-sparing diuretic

A. Furosemide (Lasix).
B. Spironolactone (Aldactone).
C. Hydrochlorothiazide (HydroDIURIL).
D. Ethacrynic acid (Edecrin).