航海英語船舶強度資料單項選擇題每日一練(2019.01.12)

來源：考試資料網(wǎng)

1 （）of the following conditions will cause a vessel’s bottom to be subjected to tension stresses.

2 For H₂S detection，sensitized tapes indicate H₂S presence by means of discoloration of an exposed spot on the tape. The shade of the color on the spot depends upon the concentration of H₂S and（）.

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3 High clouds，composed of small white flakes or scaly globular masses，and often banded together to form a “mackerel sky”，would be classified as（）.

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4 Forces within a drilling unit have caused a difference between the starboard and port drafts. This difference is（）.

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5 For an OSV not on an international voyage，an approved substitute for an impulse projected type line throwing appliance is a（）.

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