题目内容

桥架、线槽敷设应平直整齐,水平或垂直允许偏差为其长度的1‰,且全长允许偏差为20mm。

A. 正确
B. 错误

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义务兵服现役期间,其家属由当地人民政府给予优待,优待的标准是与当地平均生活水平持平。

A. 正确
B. 错误

通常居民身份证的有效期分为()。

A. 五年、十年、长期
B. 十年、二十年、三十年、长期
C. 十年、二十年、长期
D. 十年、三十年、长期

An occluded front on a weather map is colored().

A. blue line
B. purple line
C. dashed blue line
D. alternate red and blue line

If the gas pressure behind the ring is built up too slowly, and thereby exerts an inadequate outward pressureIn such a case, the combustion gas can penetrate between the liner and ring, and violently force the ring inwards, in the grooveWhat result will this type of sudden "shock" loading eventually lead to?()

A. micro-seizure
B. scratch
C. break
D. stick

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