The additional mark （）in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery and electronic devices...

A、not required to be marked anywhere on the vessel B、required to be marked on both bows and on the keel C、required to be marked on the stern with the name of the vessel marked on both bows D、required to be marked on the keel, stern, and both bows

点击查看答案

第8题

[单选题] The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is watched by duty personnel.

A、BRC B、MCC C、AUT-0 D、AUT-1

点击查看答案

第9题

[] Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine this SELECT statement based on the MARKS table: SELECT subj1+subj2 total_marks, std_id FROM marks WHERE subj1 > AVG(subj1) AND subj2 > AVG(subj2) ORDER BY total_ marks; What is the result of the SELECT statement?（） Examine the description of the MARKS table: STD_ID NUMBER(4) STUDENT_NAME VARCHAR2(30) SUBJ1 NUMBER(3) SUBJ2 NUMBER(3) SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects. Examine this SELECT statement based on the MARKS table: SELECT subj1+subj2 total_marks, std_id FROM marks WHERE subj1 > AVG(subj1) AND subj2 > AVG(subj2) ORDER BY total_ marks; What is the result of the SELECT statement?（）

A、A. The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject. B、B. The statement returns an error at the SELECT clause. C、C. The statement returns an error at the WHERE clause. D、D. The statement returns an error at the ORDER BY clause.

点击查看答案

The additional mark （）in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery and electronic devices.

请使用微信扫码支付