多项选择题

改变运行方向有()办理方式。
A、正常办理
B、故障复原
C、取消复原
D、辅助办理

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2.We took a path. It led out of the town. We crossed a few fields. We came to a dense wood.
Taking a path which led out of the town, we crossed a few fields until we came to a dense wood.

答案：错误

多项选择题

具有发泡性的是下列哪些物质？
A、卵清蛋白
B、血红蛋白
C、酪蛋白
D、肌肉蛋白质