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【单选题】
Operation of the handle releases the gas, and the slide-raft inflates.操作手柄释放气体，和滑梯充气。
A.
Through releasing the handle, the gas starts to inflate the slide-raft.
B.
Operation of the handle releases the gas which can inflate the slide-raft.
C.
The gas handle operates to inflate the slide-raft.
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三