刀具半径补偿存储中须输入刀具（）值。
A、刀尖的半径
B、刀尖的直径
C、刀尖的半径和刀尖的位置
D、刀具的长度
参考答案：C
When he lived in that remote place, radio was the only means he had to keep ______ of current events in the country.
A．account
B．trace
C．record
D．track
慢性粒细胞白血病急性变，下列最有诊断价值的是
A．Ph染色体阳性
B．进行性贫血与出血
C．脾脏显著肿大
D．白细胞计数大于100×10 9/L
E．骨髓与急白相似
