正确答案:1)natural calamities 2) salvage chcrges 3) With particular average (WA/WPA) 4) external causes 5) shortage risks 6) port of distress 7) constructive total loss 8) utmost good faith 1)natural calamities 2) salvage chcrges 3) With particular average (WA/WPA) 4) external causes 5) shortage risks 6) port of distress 7) constructive total loss 8) utmost good faith