痛风病人应禁喝牛奶
参考答案:错
It was _______ your suggestion that they set off on Sunday. [ ]
A. to
B. in
C. beyond
D. at
为了保证传递足够的功率,三角皮带在轮上的包角一般不能小于()角。
A.110°
B.120°
C.150°
D.90°