以经济建设为中心是兴国之要,解决我国所有问题的关键是()
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电弧喷铝用铝丝材质应用GB/T3190中LF2,含铝量为()以上。
A. 97.5%
B. 98.5%
C. 99.5%
D. 96.5%
《工业企业厂内运输安全规程》第3.4.8款规定:哪些地点不准停放车辆?
In a crossing situation on international waters, a short blast by the give-way vessel indicates that the vessel().
A. is holding course and speed
B. is turning to starboard
C. intends to pass port to port
D. will keep out of the way of the stand-on vessel
一男孩,从单杠上跌下右肘着地,不敢活动,体检中发现下述哪一体征即肯定肘关节脱位()
A. 疼痛
B. 肿胀
C. 肘后三角改变
D. 压痛
E. 瘀斑