易发生癌变的急性放射性皮炎是（）。
A.Ⅰ度
B.Ⅱ度
C.Ⅲ度
D.Ⅳ度
E.Ⅴ度
参考答案：C
Martha hag made up her mind to buy her favorite furniture, disregard how much money she would pay.
A．no matter how much it costs
B．no matter how much does it cost
C．no matter how it costs
D．no matter how does it cost
在碎石类土、岩层中宜用（）形钻头
A、一字
B、十字
C、管
