外伤后关节囊内出现“积脂血征”的原因是()
A、骨折线延及关节面
B、骨端粉碎性骨折
C、滑膜囊撕裂积气
D、骨折伴关节脱位
E、血液及骨髓脂肪进入关节
参考答案:E
"I'm more nervous right now than when I ______," Jane said, as she saw the group of reporters waiting
anxiously at the exit of the gym.[ ]
A. had competed
B. compete
C. was competing
D. have competed
治理超限超载工作的原则是什么?