Can you help him ____ it?[ ]
A. find
B. finding
C. finds
答案：A
高拉桩杆的梢部应向张力的反侧外斜约（）m。
“金实不鸣”是指()
A.咳声嘶哑
B.咳声不扬
C.新病音哑失音
D.肺实作喘
E.咳声紧闷
