单选题You are on a container vessel. What concerning the handling and stowage of containerized hazardous materials is TRUE?（）.A Open-bed containers may be used to transport hazardous materials if the cargo is properly securedB A portable cargo tank of a flam

In your multitenant container database (CDB) containing pluggable database (PDBs), you granted theCREATE TABLE privilege to the common user C A_ADMIN in root and all PDBs. You execute thefollowing command from the root container:SQL >REVOKE create table FROM C A_ADMIN;What is the result?（）

A. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.

B. It fails and reports an error because the CONTAINER=ALL clause is not used.

C. It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.

D. It fails and reports an error because the CONTAINER=CURRENT clause is not used.

E.It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.

A vessel is entering port A for the first time and has a Pilot conning the vessel. The Master is unsure that the Pilot is taking sufficient action to prevent a collision. What should the Master do? ______.

A.Nothing； The Pilot is required by law and is solely responsible for the safety of the vessel

B.State his concerns to the Pilot but do not interfere with the handling of the vessel

C.Direct the Pilot to stop the vessel and anchor if necessary until the situation clears

D.Recommend an alternative action and if not followed relieve the Pilot

We have the same problem as you concerning the learning of English.

Which statement(s) is/are TRUE concerning crane cargo operations?

A.Do not exceed rated load capacity of crane and container spreader or slings

B.During any cargo handling operation，the safety of personnel is paramount

C.Cargo handlers must be outfitted with adequate protection from personal injury

D.All the above

You are a database developer for a container manufacturing company. The containers produced by your company are a number of different sizes and shapes. The tables that store the container information are shown in the Size, Container, and Shape Tables exhibit:

Size

SizeID

SizeName

Height

Container

ContainerID

ShapeID

SizeID

Shape

ShapeID

ShapeName

Measurements

A sample of the data stored in the tables is shown below:

Size Table

SizeID SizeName Height

1 Small 40

2 Medium 60

3 Large 80

4 Jumbo 100

Shape Table

ShapeID ShapeName Measurement

1 Triangle 10

2 Triangle 20

3 Triangle 30

4 Square 20

5 Square 30

6 Square 40

7 Circle 15

8 Circle 25

9 Circle 35

Periodically, the dimensions of the containers change. Frequently, the database users require the volume of a container. The volume of a container is calculated based on information in the shape and size tables.

You need to hide the details of the calculation so that the volume can be easily accessed in a SELECT query with the rest of the container information. What should you do?

A. Create a user-defined function that requires ContainerID as an argument and returns the volume of the container.

B. Create a stored procedure that requires ContainerID as an argument and returns the volume of the container.

C. Add a column named volume to the container table. Create a trigger that calculates and stores volume in this column when a new container is inserted into the table.

D. Add a computed column to the container table that calculates the volume of the container.

A deck-stowed 40-foot container is giving off smoke，and one end is discolored from heat. The cargo is valuable and easily damaged by water. You want to extinguish the fire without further damage if possible. What action should you take? ______.

A.Connect a portable line from the ship's fixed system and discharge CO2 into the container

B.Flood the container with water and disregard any cargo damage as the fire threatens the entire vessel

C.Pierce the container and discharge 6 or more portable CO2's then add more CO2 hourly

D.Cool the exterior of the container with water and close all vents； then keep it cooled until it can be off-loaded

You are connected using SQL* Plus to a multitenant container database (CDB) with SYSDBA privilegesand execute the following sequence statements:What is the result of the last SET CONTAINER statement and why is it so?（）

A. It succeeds because the PDB_ADMIN user has the required privileges.

B. It fails because common users are unable to use the SET CONTAINER statement.

C. It fails because local users are unable to use the SET CONTAINER statement.

D. If fails because the SET CONTAINER statement cannot be used with PDB$SEED as the target pluggable database (PDB).

What purpose does a bridge fitting serve when lashing containers ________．

A.Ties a container stack to the deck

B.Ties a container to the container below it

C.Restrains racking loads

D.Restrains the container against horizontal motion