由肌皮动脉穿出肌肉的穿支供血的皮瓣称为（）
A．肌皮瓣
B．动脉皮瓣
C．随意皮瓣
D．轴型皮瓣
E．局部皮瓣
参考答案：C
Mike _______ in touch with his former schoolmates, who had been living there for ages, as soon as he
arrived in America. [ ]
A. is bound to get
B. set about getting
C. get down to get
D. set out getting
在一个非零无符号二进制整数之后添加1个0，则此数的值为原数的______。
A．4倍 B．2倍 C．1/2倍D．1/4倍
