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【单选题】
The aural indication includes firebell sound, two-tone siren sound, and level B caution aural sound. in the above sentence,音响指示不包括
A.
火警铃声; ;
B.
;2种音调的警笛声
C.
来话呼叫;
D.
程度B注意音响声
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
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【单选题】偏航阻尼器指示器指示的是什么（）？
A.
方向舵的偏转量
B.
由脚蹬引起的方向舵的偏转量
C.
由偏航阻尼器引起的方向舵的偏转量
D.
由脚蹬和偏航阻尼器共同引起的方向舵的偏转量