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【简答题】
negarse ____ hacer algo
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【简答题】下图中标注的M20×2LH-6H，表示公称直径是20的左旋的（ ），中经、顶径公差代号均为6H。（从普通细牙内螺纹，普通粗牙内螺纹，普通细牙外螺纹，普通粗牙外螺纹中选择）。 【图片】
【单选题】下图中标注的M20×2LH-6H，表示公称直径是20的左旋的（ ），中经、顶径公差代号均为6H。【图片】
A.
普通细牙内螺纹
B.
普通粗牙内螺纹
C.
普通细牙外螺纹
D.
普通粗牙外螺纹
【单选题】Enhanced procedures concerning the exercise of___ have been developed to allow intervention in the case of deficiencies deemed to pose a danger to persons, property or the environment.
A.
flag state control
B.
safety inspection
C.
fire and boat drill
D.
port state control
【简答题】按仓库的管理体制分,可将仓库分为__和__。
【单选题】Enhanced procedures concerning the exercise of ____have been developed to allow intervention in the case of deficiencies deemed to pose a danger to persons, property or the environment.
A.
port state control
B.
flag state control
C.
fire and boat drill
D.
safety inspection
【简答题】下图中标注的M20×2LH，表示公称直径是20的左旋的（ ），中经、顶径公差代号均为6H。（从普通细牙内螺纹，普通粗牙内螺纹，普通细牙外螺纹，普通粗牙外螺纹中选择）。 【图片】
【单选题】Enhanced procedures concerning the exercise of （） have been developed to allow intervention in the ease of deficiencies deemed to pose a danger to persons, property or the environment.
A.
port state control
B.
flag state control
C.
fire and boat drill
D.
Safety inspection
【单选题】Enhanced procedures concerning the exercise of ______have been developed to allow intervention in the case of deficiencies as deemed to pose a danger to persons , property or the environment
A.
port state control
B.
flag state control
C.
fire and boat drill
D.
safety inspection
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