第19题:[单选题]Which of the following situation for which ATC is responsible is not an ATC accident? A.category flight accident B.airmiss due improper separation C.forced landing of A/C D.A/C with no controller monitoring 参考答案:D
第29题: [单项选择]除鼠证自签发之日起( )个月内有效。因故不宜按期除鼠,且该船舶又开往便于实施鼠患检疫或蒸熏除鼠的港口,可以准许证书有效期延长( )个月,并签发延长证明。 A. 6;2 B. 3;2 C. 6;1 D. 3;1 参考答案:C 答案解析:除鼠证自签发之日起6个月内有效。因故不宜按期除鼠,且该船舶又开往便于实施鼠患检疫或蒸熏除鼠的港口,可以准许证书有效期延长1个月,并签发延长证明。