The existence of liquids in partially full tanks or compartments of a ship causes a virtual rise in the height of the（）.

A、metacenter

B、center of buoyancy

C、center of flotation

D、center of gravity

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更多“The existence of liquids in partially full tanks or compartments of a ship causes a virtual rise in the height of the（）.”相关的问题

第1题

[单选题] 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.

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第2题

[多选题] The EMP table has some discrepancy in data entry with a particular employee ID. You execute the query as shown in the Exhibit to retrieve all versions of the row that exist between two SCNs.View the Exhibit. Which two statements about the results of the query shown in the Exhibit are correct? （）(Choose two.)

A、The LAST_SCN value in the first row is NULL, which means that the versions of the row still exist at SCN 6636300. B、The LAST_SCN value in the second row in NULL, which means that the version of the row still exists at SCN 6636300. C、The LAST_SCN value in the third row is 6636280, which means that the version of row exists above SCN 6636280. D、The LAST_SCN value in the second row is NULL, which means that the version of the row no longer exists because it was deleted.

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第3题

[多选题] The EMP table has some discrepancy in data entry with a particular employee ID. You execute the query as shown in the Exhibit to retrieve all versions of the row that exist between two SCNs. View the Exhibit. Which two statements about the results of the query shown in the Exhibit are correct?（）

A、The LAST_SCN value in the first row is NULL, which means that the versions of the row still exist at SCN 6636300. LAST_SCN B、The LAST_SCN value in the second row in NULL, which means that the version of the row still exists at SCN 6636300. C、The LAST_SCN value in the third row is 6636280, which means that the version of row exists above SCN 6636280. D、The LAST_SCN value in the second row is NULL, which means that the version of the row no longer exists because it was deleted. LAST_SCN

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第4题

[] Click the Exhibit button. In the configuration shown in the exhibit, you decided to eliminate the junos-ftp application from the match condition of the policy MyTraffic.What will happen to the existing FTP and BGPsessions?（） Click the Exhibit button. In the configuration shown in the exhibit, you decided to eliminate the junos-ftp application from the match condition of the policy MyTraffic.What will happen to the existing FTP and BGPsessions?（）

A、A. The existing FTP and BGP sessions will continue. B、B. The existing FTP and BGP sessions will be re-evaluated and only FTP sessions will be dropped. C、C. The existing FTP and BGP sessions will be re-evaluated and all sessions will be dropped. D、D. The existing FTP sessions will continue and only the existing BGP sessions will be dropped.

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第5题

[单选题] Geographic range is the maximum distance at which a light may be seen under（）.

A、existing visibility conditions，limited only by the curvature of the Earth B、perfect visibility conditions，limited only by the curvature of the Earth C、existing visibility conditions，limited only by the intensity of the light D、perfect visibility conditions，limited only by interference from background lighting

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第6题

[单选题] Which of the following will occur if an operator types the command vi file.out?（）

A、If the file exists it will be opened for editing. If the file does not exist an error message will be displayed. B、If the file exists it will be opened for editing. If the file does not exist a new file with the name file.out will be created and opened for editing. C、If the file exists an error message will be displayed. If the file does not exist a new file with the name file.out will be created and opened for editing. D、If the file exists the operator will be asked whether to open the file or overwrite the file. If the file does not exist a new file with the name file.out will be created and opened for editing.