电火花线切割加工编程时当圆弧的终点靠近X轴时这时的计数方向选（）。
A.Gx
B.Gy
C.Gx、Gy任选
D.以上答案都不对
参考答案：B
Why don't you bring ________ to his attention that you're too ill to work on?[ ]
A. that
B. it
C. this
D. him
炸药销毁焚烧时，应在天气晴朗、干燥无风的白天进行。（）
. it