涤纶纤维分散染料高温高压染色时，染液的PH值以控制在（）为宜。
A、3～4
B、5～6
C、9～10
参考答案：B
35. —David has been in low spirits these days.
— _________ He should have failed in the Math test.
A．How come?
B．How is it?
C．Guess what?
D．No wonder
Quincke征是指
A．明显颈动脉搏动
B．毛细血管搏动
C．枪击音
D．动脉双重杂音
E．点头运动
