曲面刮刀主要用于刮削外曲面。
参考答案：错
把61万用科学记数法可表示为（ ）
A．6.1×104
B．6.1×105
C．6.0×105
D．61×104
Many Chinese people donate money to help those students ________ financial aid.[ ]
A. in favor of
B. in honor of
C. in face of
D. in need of
