Ullage measurements are taken from the top of the liquid to(

题目
单选题
Ullage measurements are taken from the top of the liquid to().
A

the base of the expansion trunk

B

the base of the ullage port

C

a line scribed within the ullage port

D

an above-deck datum,usually the top of the ullage hole

如果没有搜索结果或未解决您的问题,请直接 联系老师 获取答案。
相似问题和答案

第1题:

在成绩表中要求按“物理”降序排列,并查询前两名的学生姓名,正确的语句是( )。

A.SELECT 姓名 TOP 2 FROM 成绩表 WHERE 物理 DESC

B.SELECT 姓名 TOP 2 FROM 成绩表 FOR 物理 DESC

C.SELECT 姓名 TOP 2 FROM 成绩表 GROUP BY 物理 DESC

D.SELECT 姓名 TOP 2 FROM 成绩表 ORDER BY 物理 DESC


正确答案:D
解析:使用SQL SELECT可以将查询结果排序,排序的短语是ORDER BY。只显示前几项记录的格式是: TOP nExpr[PERCENT]。
其中,nExpr是数字表达式,当不使用[PERCENT]时,nExpr可以是1~32767之间的整数;当使用 (PERCENT]时,nExpr是0.01到99.99间的实数,说明显示结果中前百分之几的记录。TOP要与ORDER BY一起使用才有效。

第2题:

The tanks should then be ______ immediately after the measurements or cargo samples have been taken.

A.topped up

B.braced

C.tommed down

D.re-pressurized


正确答案:D

第3题:

The pictures of the moon taken from the spacecraft are _______ than those taken from theearth.

A. clear

B. much clearer

C. more clearer

D. the clearest


参考答案:B

第4题:

现有书目表book,包含字段:price(float);现在查询一条书价最高的书目的详细信息,以下语句正确的是()

  • A、select top 1 * from book order by price asc
  • B、select top 1 * from book order by price desc
  • C、select top 1 * from book where price= (select max (price)from book)
  • D、select top 1 * from book where price= max(price)

正确答案:B,C

第5题:

Definition of Length:()

  • A、The length shall be taken as 96% of the total length
  • B、The length shall be taken as 96% of the Lbp
  • C、The length shall be taken as 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel
  • D、The length from the fore side of the stem to the axis of the rudder stock on that waterline

正确答案:C,D

第6题:

When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,check it ______.

A.one meter from the tank bottom and one meter below the tank top

B.one half the ullage of the tank and one meter below the tank top

C.one half the ullage of the tank and one meter above the tank bottom

D.at three meter intervals from the tank top to the bottom


正确答案:B

第7题:

下列查询年龄最大的前四个学生(包括并列的情况)的语句,正确的是()。

  • A、SELECT TOP 4 WITH TIES * FROM Student ORDER BY Sage ASC
  • B、SELECT TOP 4 WITH TIES * FROM Student GROUP BY Sage ASC
  • C、SELECT TOP 4 WITH TIES * FROM Student ORDER BY Sage DESC
  • D、SELECT TOP 4 WITH TIES * FROM Student GROUP BY Sage DESC

正确答案:C

第8题:

在成绩表中要求按“总分”降序排列,并查询前3名学生的记录,正确的命令是

A.SELECT * TOP 3 FROM成绩表; WHERE总分DESC

B.SELECT * TOP 3 FROM成绩表; FOR总分DESC

C.SELECT * TOP 3 FROM成绩表; GROUP BY总分DESC

D.SELECT * TOP 3FROM成绩表; ORDER BY总分DESC


正确答案:D
解析:使用SQLSELECT可以对查询结果进行排序,排序的短语是ORDERBY。选项A)和B)属于语法错误,选项C)中的GROUPBY短语的功能是对查询结果进行分组。使用SELECT-SQL可以实现显示部分结果,需结合TOP短语。

第9题:

查询金额最大的那10%订单的信息。正确的SQL语句是()。

  • A、SELECT * TOP 10 PERCENT FROM 订单
  • B、SELECT TOP 10% * FROM 订单 ORDER BY 金额
  • C、SELEC T* TOP 10 PERCENT FROM 订单 ORDER BY 金额
  • D、SELECT TOP 10 PERCENT * FROM 订单 ORDER BY 金额 DESC

正确答案:D

第10题:

单选题
When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,check it().
A

one meter from the tank bottom and one meter below the tank top

B

one half the ullage of the tank and one meter below the tank top

C

one half the ullage of the tank and one meter above the tank bottom

D

at three meter intervals from the tank top to the bottom


正确答案: A
解析: 暂无解析

更多相关问题