注册验船师

For self elevating and column stabilized units， is 100% lifeboat capacity acceptable for the MODU Code？（）A、No， the MODU Code requires that there should be 100% capacity available when all lifeboats in one location are lost or rendered unusable， or all the

题目

For self elevating and column stabilized units， is 100% lifeboat capacity acceptable for the MODU Code？（）

  • A、No， the MODU Code requires that there should be 100% capacity available when all lifeboats in one location are lost or rendered unusable， or all the lifeboats on any one side， or any one corner of the unit are lost or rendered unusable. Generally， this requirement is met by applying 2 x 100% lifeboat capacities
  • B、Yes， the lifeboats should be able of carrying the number of personnel onboard the unit.， i.e. 1 x 100%
  • C、Yes， provided you have additional liferaft capacity
  • D、You don’t need lifeboats as long as you have 2 x 100% liferaft capacity
参考答案和解析
正确答案:A
如果没有搜索结果，请直接 联系老师 获取答案。
相似问题和答案

第1题：

POST的全称是()。

A.put-on self-test

B.power-off self-test

C.put-off self-test

D.power-on self-test


正确答案：D


第2题：

When defining a referential constraint between the parent table T2 and the dependent table T1, which of the following is true?()

A.The list of column names in the FOREIGN KEY clause can be a subset of the list of column names in the primary key of T2 or a UNIQUE constraint that exists on T2.

B.The list of column names in the FOREIGN KEY clause can be a subset of the list of column names in the primary key of T1 or a UNIQUE constraint that exists on T1.

C.The list of column names in the FOREIGN KEY clause must be identical to the list of column names in the primary key of T2 or a UNIQUE constraint that exists on T2.

D.The list of column names in the FOREIGN KEY clause must be identical to the list of column names in the primary key of T1 or a UNIQUE constraint that exists on T1.


参考答案：C

第3题：

She was sure of her skills as a pianist, so she came on stage with dignity and ________.

A self-worth

B self-esteem

C self-concept

D self-assurance


参考答案D

第4题：

PCI Management是()范畴

A.Self Configuration

B.Self Optimization

C.Self Healing


参考答案：A

第5题：

利用SQL命令删除“学生”表中的“年龄”字段，正确的命令格式是（ ）。

A)ALTER TABLE 学生 DELETE COLUMN 年龄

B)ALTER TABLE 学生 DROP COLUMN 年龄

C)ALTER TABLE 学生 CANCEL COLUMN 年龄

D)ALTER TABLE 学生 CUT COLUMN 年龄


正确答案：B
从表中删除指定字段的SQL命令是：
ALTER TABLE表名DROP[COLUMN]字段名，其中，COLUMN可以省略。

第6题：

Which of the following scenarios will ensure that the value of the NEXT_STEPNO column in a given row of table TABLEX exists as a value of column STEPNO (usually in another row) in the same table?()

A.Define a UNIQUE constraint on the columns NEXT_STEPNO and STEPNO.

B.Define a CHECK constraint on the NEXT_STEPNO column (NEXT_STEPNO = STEPNO).

C.Define column STEPNO as the primary key of TABLEX and column NEXT_STEPNO as a foreign key referencing column STEPNO of the same table.

D.Define column NEXT_STEPNO as the primary key of TABLEX and column STEPNO as a foreign key referencing column NEXT_STEPNO in the same table.


参考答案：C

第7题：

Which of the following can be used to ensure that once a row has been inserted in table TABLEX, the column MAINID in that row cannot be updated?()

A.Define the column MAINID as NOT UPDATABLE

B.Define the column MAINID as a PRIMARY KEY

C.Define the column MAINID as a FOREIGN KEY

D.Define an UPDATE trigger on table TABLEX


参考答案：D

第8题：

删除student表中“平均成绩”字段的正确SQL命令是（ ）。

A. DELETE TABLE student DELETE COLUMN平均成绩

B. ALTER TABLE student DELETE COLUMN平均成绩

C. ALTER TABLE student DROP COLUMN平均成绩

D. DELETE TABLE student DROP COLUMN平均成绩


正确答案：C
ALTER语句用于在已有的表中添加、修改或删除字段。删除字段的格式为：alter table tablename drop column fieldname，故本题答案为C 。

第9题：

energy saving 在son()category中体现的。

A.Self Configuration

B.Self Optimization

C.Self Healing

D.Self Organization


参考答案：B

第10题：

The Vessel is a __________ bulk carrier which is permitted to carry grain in bulk without requiring any fittings under the Rules of the 1974 International Safety of Life at Sea Convention.

A.self-loading

B.self-trimming

C.self-unloading

D.self-discharging


正确答案：s

更多相关问题
相关内容