题目内容
(请给出正确答案)
[单选题]
燕尾形盖板尾部的补强板长度须盖过裂纹每侧()及以上。
A.50mm
B.100mm
C.150mm
D.300mm
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A.50mm
B.100mm
C.150mm
D.300mm
A.8~10mm
B.10~12mm
C.10~15mm
D.15~20mm
A.100mm错50mm错10mm
B.250mm错80mm错10mm
C.200mm错80mm错10mm
D.250mm错50mm错10mm