According (10) ............ the authors,
A. for
B. from
C. to
Im still looking (8) ............the perfect solution.
A. to
B. at
C. for
decide (3) ............they were going and then use
A. where
B. who
C. why
2条钢丝绳吊货时,其夹角不应超过()
A. 70°
B. 90°
C. 120°
D. 150°