茶叶灰分含量过高是茶叶品质差或是混入泥沙杂质造成的。
参考答案:对
选词填空。
What How How many How much
1. — bananas do you have?
— Two.
2. — are you?
— Fine, thanks.
3. — would you like?
— I'd like a sandwich.
4. — are the cookies?
— Five yuan.
下列哪项属于高钾血症的症状( )
A.心电图P波消失、QRS波增宽、QT间期延长B.心悸、心动过速,心律失常、传导阻滞C.表情淡漠、倦怠嗜睡或烦躁不安D.肌肉软弱无力,腱反射迟钝或消失E.膀胱收缩无力而排尿困难