船舶水手考试
If there is a fire in a hold, what should you do?（）A、Close the hatch, accesses and ventilators at once. Flood CO2 into hold.B、Open the hatch, accesses and ventilators at once. Flood CO2 into hold.C、Close the hatch, accesses and ventilators at once. Flood
题目
If there is a fire in a hold, what should you do?（）
- A、Close the hatch, accesses and ventilators at once. Flood CO2 into hold.
- B、Open the hatch, accesses and ventilators at once. Flood CO2 into hold.
- C、Close the hatch, accesses and ventilators at once. Flood water into hold.
- D、Open the hatch, accesses and ventilators at once. Flood water into hold.
相似问题和答案
第1题：
在SQL语句中，与表达式“仓库号NOT IN（"whl ","wh2")”功能相同的表达式是A）仓库号="wh1"AND仓库号="wh2"B）仓库号!="whl" OR仓库号="wh2"C) 仓库号<>"wh 1" OR仓库号！="wh2"D）仓库号!="whl" AND仓库号!= "wh2"
题千中给出的表达式：“仓库号 NOT IN("wh1""wh2")”表示仓库号不是"wh1"并且不是"wh2"。符号“！=”表示的是，不等于，因此正确答案为选项D。选项A表仓库号等于"whl"并且等于"wh2"，选项B表示仓库号不等于"whl"或者等于"wh2"。选项C表示仓库号不等于"whl"或者不等于"wh2"。因此选项D为正确答案。
第2题：
给出在仓库“WHl”或“WH2”工作，且年龄小于40岁的职工号和姓名，正确的命令是（ ）。
A)SELECT 职工号，姓名 FROM 职工：
WHERE 年龄<40 AND 仓库号=”WH1”OR 仓库号=”WH2”
B)SELECT职工号，姓名 FROM 职工；
WHERE年龄<40 AND(仓库号=”WH1”AND 仓库号=”WH2”)
C)SELECT职工号，姓名 FROM 职工；
WHERE年龄<40 OR 工仓库号=”WH1”OR 仓库号=”WH2”
D)SELECT职工号，姓名 FROM 职工：
WHERE年龄<40 AND(仓库号=”WH1”OR 仓库号=”WH2”)
依据题意，本查询应该有两个筛选条件，即“仓库=''WH1 ”OR仓库=“WH2”和“年龄<40”，并且这两个条件要同时满足，也就是说本题应先进行或运算，即先判断“仓库=WH1”OR仓库="WH2””，再将此结果与“年龄<40”的条件进行与运算，又因为与运算比或运算的优先级高，所以要将或运算用圆括号括起来。
第3题：
在SQL语句中，与表达式“仓库号NOT IN(“wh1”，“wh2”)”功能相同的表达式是
A．仓库号=“wh1”AND仓库号：“wh2”
B．仓库号!=“wh1”OR仓库号：=“wh2”
C．仓库号＜＞“wh1”OR仓库号!=“wh2”
D．仓库号!=“wh1”AND仓库号!=“wh2”
解析：题干中给出的表达式：“仓库号NOT IN(“wh1”，“wh2”)”表示仓库号不是“wh1”并且不是“wh2”。符号“!=”表示的是不等于，因此正确答案为选项D。选项A表示仓库号等于“wh1”并且等于“wh2”，选项B表示仓库号不等于“wh1”或者等于“wh2”。选项C表示仓库号不等于“wh1”或者不等于“wh2”。因此选项 D为正确答案。
第4题：
Which of the following statements is FALSE concerning the proper procedure in handling a fire hose ________．
A.A 1.5 inch hose should be deployed with a minimum of a nozzleman and hoseman
B.Back-up hosemen should be positioned wherever the hose makes a significant turn
C.The fire hose should be partially charged before deploying it from the fire station
D.The nozzleman should always hold the nozzle with one hand on top，to prevent kickback
第5题：
A fire breaks out in ＃4 hold and partially damages some of the cargo．In order to extinguish the fire the hold is flooded thus damaging the remaining cargo in that hold．Which of the following is (are) correct？ ______ ① The damage to the cargo by fire is particular average． ② The damage to the cargo by water is general average．
A.① only
B.② only
C.Both ① and ②
D.Neither ① nor ②
第6题：
下列SQL语句能实现的功能是( )。 SELECT*FROM 仓库 WHERE 仓库号="WH1"; UNION; SELECT * FROM 仓库 WHERE 仓库号="WH2"
A．查询在WH1或者WH2仓库中的职工信息
B．查询仓库号为WH1或者WH2的仓库信息
C．查询即在仓库号为WH1，又在仓库号为WH2工作的职工信息
D．语句错误，不能执行
解析：SQL支持集合的并(UNION)运算，即可以将两个SELECT语句的查询结果通过并运算合并成一个查询结果。为了进行并运算，要求这样的两个查询结果具有相同的字段个数，并且对应字段的值要出自同一个值域(相同的数据类型和取值范围)。所以题干中的SQL语句实现的功能是查询仓库号为WH1或WH2的仓库信息。
第7题：
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should ______.
A.remain on course and hold speed
B.remain on course but slack the speed
C.change course to put the wind on either beam and increase speed
D.change course and put the stern to the wind
第8题：
在SQL语句中，与表达式“仓库号NOT IN("whl","wh2")”功能相同的表达式是 ______。
A．仓库号="wh1" AND仓库号="wh2"
B．仓库号!="wh1"OR仓库号#"wh2"，
C．仓库号＜＞"wh1" OR仓库号!"wh2"
D．仓库号户'whl，tAND仓库号!：”wh2”
解析：NOTIN表示仓库号不在集合(“wh1”，“wh2”)中。
第9题：
Oceangoing dry bulk cargo vessels over 1000 GT must have approved combination-type fire nozzles at all ______．
A.Fire stations aboard the vessel，except for those in open deck areas weatherdeck and cargo hold fire stations
B.Interior fire stations
C.Engine room fire stations
D.All of the above
第10题：
A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should ______.
A.remain on course and hold speed
B.change course and put the stern to the wind
C.change course to put the wind on either beam and increase speed
D.remain on course but slack the speed
在海上航行船首尖舱着火，风以35节速度从船首吹来，你应该改向，以船尾受风。