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单选题
When the hatch is closed, there is no airflow to the compartment and there is a risk of suffocation.
A
The closed door prevents airflow from entering the compartment and may cause death because of no air to breathe.
B
When the access plate is closed, the lack of ventilation of the compartment brings a risk of suffering injury.
C
If you close the opening, the airflow can not enter into the compartment and creates a risk of jam.
答案解析
正确答案：A
