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【单选题】
开口尺寸能在一定的范围内任意调整，使用场合与开口扳手相同，但操作起来不太灵活的是（）工具。A.
梅花扳手
B.
套筒扳手
C.
活动扳手
D.
内六方扳手
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【单选题】听力原文： Hello, ladies and gentlemen, this is your captain speaking. You are on board Flight 1125 heading for Los Angeles and scheduled to arrive at 20:46 Western Daylight Savings Time. We are currently ...
A.
About 4 hours.
B.
About 11 hours.
C.
About 15 hours.
D.
About 20 hours.
【单选题】【单选】You are on board the give-way vessel in a crossing situation. What should you NOT do to obey the Rules?
A.
Back your vessel
B.
Cross ahead of the stand-on vessel
C.
Make a large course change to starboard
D.
Slow your vessel
【简答题】计算机对I/O 端口编址时可以采用I/O端口与存储器统一编址和I/O端口单独编址两种方式,在8086系统中采用的是I/O端口____方式。
【单选题】You are kindly requested to supply the necessary tallymen to do（）on board the ship during the discharging of the cargo.
A.
the tallying work
B.
the lashing work
C.
the clean work
D.
the work of opening and closing hatches
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