（）forms over land，most frequently during autumn and winter over low-lying land，especially if it is damp and marshy and in valleys on quiet nights with clear skies.

Most lifeboats are equipped with （）.

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Freight rates are mostly charged（）.

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Freight rates are mostly charged（）.

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Most lifeboats are equipped with（）.

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The word “offset” most probably means（）

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Most solenoid valves are actuated by （）.

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Advection fog is most commonly caused by（）.

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Advection fog is most commonly caused by（）.

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Most pedestal crane power is provided by（）.

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The line with the most stretch is（）.

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