薄壁制品注射工艺条件应是（）。
A.注射压力较高
B.注射压力较小
C.料筒温度较高
D.料筒温度较小
参考答案：A, C
With the victory at the French Open, Li Na has reached NO．4 in the world, ______ the previous
Asian Record. [ ]
A. equaled
B. equaling
C. to have equaled
D. having equaled
肩关节脱位不常见的并发症是（）。
A.肱骨大结节骨折
B.冈上肌腱断裂
C.肱二头肌腱滑脱
D.肋骨骨折
E.肱骨外科颈骨折
