下列染料的染液中需要加入软水剂的是（）。
A.活性染料
B.阳离子染料
C.分散染料
参考答案：C
The nurse is caring for a client who is experiencing sinus bradycardia with a pulse rate of 40 beats/minute. His blood pressure is 80/50 mmHg and he complains of dizziness. Which medication would be used to treat his bradycardia
A. Atropine.B. Dobutamine (Dobutrex).C. Bretylium (Bretylol).D. Lidocaine (Xylocaine).
图示为示波管构造的示意图，现在xx'上加上uxx'-t信号，yy'上加上uyy'-t信号（如图甲、乙所示），则在屏幕上看到的图形是
A．
B．
C．
D．
