1.All the crewmembers shall be at the station as required by the muster list when in firefighting drill______minutes after hearing the alarm，and the duty engineer shall be able to make the fire pumps available with______minutes．

2.通常在中纬地区陆地上交角约为（），在海面上约为10°～20°。

3.（）附近，昼夜长短几乎相等，最热月和最冷月热量收支相差不大，气温年较差小。

4.气压是大气压强的简称，它与天气的关系是（）

5.PARACEL:N TO NE 6 AND UP TO 10 IN NA. 4000 M IN FRQ SQUALLY SHWRS AND TS. SEA 2 M AND UP TO 8-9 IN NA. SWELL E TO NE 4-5. FROM the above broadcast, the visibility will be ______.

6.PUBLIC ADDRESS SYSTEM:LOUDSPEAKERS IN THE VESSEL’S CABINS, MESS ROOMS, ETC., AND ON DECK VIA WHICH IMPORTANT INFORMATION CAN BE BROADCAST FROM A CENTRAL POINT, MOSTLY FROM THE NAVIGATION BRIDGE defines ______.

7.已知磁差Var=2°W，罗经差1°W，磁航向000°，则真航向为（）

8.Do not______the watch to the relieving officer until he has verbally expressed his acknowledgment of the information which has been passed by the officer handing over．

9.在平静的大洋航行时，雷达只用于避碰观测，采用（）是最方便的选择。

10.In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows ______.

11.在海平面上温度为15℃，高度每升（）高英尺，降低2℃

12.In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the ______.

13.在船底装有发射超声波的发射换能器A和接收超声波的接收换能器B，A与B之间的距离为S，称为基线。发射换能器A以间歇方式向水下发射（）

14.远离或尚未影响到预报责任区时，根据需要可以发布“消息”，预计未来（）内将影响本责任区的沿海地区或登临时发布警报

15.东海和南海盛行东北季风，以东北浪居多，（）东北浪占优势。

16.季风流的流速在苏门答腊附近约2kn，在斯里兰卡南部为2.5kn，在索马里东部为2～3kn。（）赤道逆流的位置约在5°S附近，与东北季风流相接，形成了北印度洋冬季反时针方向的环流流系。

17.A vessel on the high seas that is not under command shall display which of the following day signals？ ______

18.船位报告是（）

19.How many GMDSS operators are needed/required on board according to the provisions of the International Convention for the Safety of Life at Sea，1974？______．

20.通常反气旋的强度(intensity)以（），中心气压值越高，表示反气旋越强。