右侧副神经损伤，颈部向何侧转动力量减弱（）
A.颈向右转无力
B.颈后伸受限
C.转颈不受影响
D.颈前曲受限
E.颈向左转无力
参考答案：E
---Can you tell me ____?
---With Lucy’s help.
A．when you did it so well
B．when did you do it so well
C．how you did it so well
D．how did you do it so well
引起锅炉受热面生成水垢的原因为（）。
A.给水不断蒸发和浓缩
B.受热面壁温升高
C.烟温升高
D.盐类腐蚀
