A、any certificated tankerman
B、the master of the vessel
C、the officer of the watch
D、the person designated as person in charge
更多“Functions aboard a tanker or tank barge such as connecting, disconnecting, and topping off must be supervised by（）.”相关的问题
A、any certificated tankerman B、the Master of the vessel C、the officer of the watch D、the person designated as person in charge
A、any certificated tankerman B、the Master of the vessel C、the officer of the watch D、the person designated as person in charge
A、A.any certificated tankerman B、B.the Master of the vessel C、C.the officer of the watch D、D.the person designated as "person in charge"
A、Group functions on columns ignore NULL values. B、Group functions on columns returning dates include NULL values. C、Group functions on columns returning numbers include NULL values. D、Group functions on columns cannot be accurately used on columns that contain NULL values. E、Group functions on columns include NULL values in calculations if you use the keyword INC_NULLS.
A、Group functions on columns ignore NULL values. B、Group functions on columns returning dates include NULL values. C、Group functions on columns returning numbers include NULL values. D、Group functions on columns cannot be accurately used on columns that contain NULL values. E、Group functions on columns include NULL values in calculations if you use the keyword INC_NULLS.
A、A. Group functions on columns ignore NULL values. B、B. Group functions on columns returning dates include NULL values. C、C. Group functions on columns returning numbers include NULL values. D、D. Group functions on columns cannot be accurately used on columns that contain NULL values. E、E. Group functions on columns include NULL values in calculations if you use the keyword INC_NULLS.
A、You can use aggregate functions in any clause of a SELECT statement. B、You can use aggregate functions only in the column list of the SELECT clause and in the WHERE clause of a SELECT statement. C、You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns. D、You can pass column names, expressions, constants, or functions as parameters to an aggregate function. E、You can use aggregate functions on a table, only by grouping the whole table as one single group. F、You cannot group the rows of a table by more than one column while using aggregate functions.
A、You can use aggregate functions in any clause of a SELECT statement. B、You can use aggregate functions only in the column list of the SELECT clause and in the WHERE clause of a SELECT statement. C、You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns. D、You can pass column names, expressions, constants, or functions as parameters to an aggregate function. E、You can use aggregate functions on a table, only by grouping the whole table as one single group. F、You cannot group the rows of a table by more than one column while using aggregate functions.
A、You can use aggregate functions in any clause of a SELECT statement. B、You can use aggregate functions only in the column list of the SELECT clause and in the WHERE clause of a SELECT statement. C、You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns. D、You can pass column names, expressions, constants, or functions as parameters to an aggregate function. E、You can use aggregate functions on a table, only by grouping the whole table as one single group. F、You cannot group the rows of a table by more than one column while using aggregate functions.
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