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油砂属于非常规油。()

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Every A3 ship, while at sea, shall maintain a continuous watch:

A. On VHF DSC channel 70
B. On the distress and safety DSC frequency 2,187.5 KHz and 8,414.5 KHz and also on at least one of the distress and safety DSC frequencies 4,207.5 KHz, 6,312 KHz, 12,577 KHz or 16,804.5 KHz, appropriate to the time of day and the geographical position of the ship
C. For satellite shore-to-ship distress alerts
D. All of these

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（）是当代中国最鲜明的特色，是我们党在新的历史时期最鲜明的旗帜，是决定当代中国命运的关键抉择。

A. 改革开放
B. 经济发展
C. 社会稳定
D. 理论创新

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What is defined as an area, excluding sea area A1, within the radiotelephone coverage area

A. Ocean Area Regions AOR-E, AOR-W, POR or IOR
B. Sea Area A4
C. Sea Area A3
D. Sea Area A2

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热量计的主要组件包括（）。

A. 氧弹
B. 充氧压力表
C. 外筒
D. 点火丝

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