斜齿圆柱齿轮的标准模数和标准压力角在（）上。
A.端面
B.轴面
C.主平面
D.法面
参考答案：D
They were afraid that their oil and food would soon ______ if the help didn't come in time.[ ]
A. run out of
B. run out
C. be run out of
D. be run out
变造会计凭证是指用涂改、挖补等手段改变会计凭证真实内容的行为。( )
