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单选题
Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful（）.
A
to keep the boats covered at all times
B
not to leave steel or iron tools lying in or near these boats
C
to keep an electric charge on the hull at all times
D
to rinse these boats regularly with salt water
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更多 “单选题Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful（）.A to keep the boats covered at all timesB not to leave steel or iron tools lying in or near these boatsC to keep an electric charge on the hull at all timesD to rinse these boats regularly with salt water” 相关考题
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