The “urgent” priority should be used for messages().
A. concerning the Safety of Life at Sea (SOLAS)
B. detailing important navigational warnings
C. containing information concerning the safety of a mobile unit or person
D. concerning on-scene communicatio
查看答案
吊钩开口达原尺寸的10%时应报废,其检验工具()。
A. 游标卡尺
B. 千分尺
C. 塞尺
甲状腺借筋膜固定于()上,故吞咽时可随喉上下移动.
吊顶龙骨的中部起拱,起拱高度一般为房间短向跨度的1/300
A. 正确
B. 错误