These are the principles, however formulated,（）all good men and women throughout the world are standing...

第1题

[] Note the points about data dictionary views and dynamic performance views： 1.These are stored in the SYSTEM tablespace. 2.These are the based on the virtual tables. 3.These are owned by the SYSuser. 4.These can be queried by a normal user only if O7_DICTIONARY_ACCESSIBILTY parameter is set toTRUE. 5.V$FIXED_TABLE view can be queried to list the names of these views. Which statements listed describe the data dictionary views（） Note the points about data dictionary views and dynamic performance views： 1.These are stored in the SYSTEM&

A、A.1 and 3 B、B.2，3，and 5 C、C.1，2，and 3 D、D.2，3，4，and 5

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第2题

[单选题] why do some stations keep silence?（）

A、Because they are not engaged in the distress traffic B、they will affect the transmission of the distress traffic C、The powers of these stations are very weak D、They are not in charge of search and rescue

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第3题

[单选题] The（）should ensure that the holds in which chemical packages are stowed are properly supervised during the loading operations and these packages are regularly inspected for leakage or damage on the voyage.

A、berth operator B、harbour supervisor C、master of a ship D、port authority

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第4题

[单选题] Which statements listed below describe the data dictionary views（） 1） These are stored in the SYSTEM tablespace. 2） These are the based on the virtual tables. 3） These are owned by the SYS user. 4） These can be queried by a normal user only if O7_DICTIONARY_ACCESSIBILTY parameter is set to TRUE. 5） The V$FIXED_TABLE view can be queried to list the names of these views.

A、1 and 3 B、2， 3， and 5 C、1， 2， and 3 D、2， 3， 4， and 5

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第5题

[单选题] The PRODUCTS table has these columns: PRODUCT_ID NUMBER(4) PRODUCT_NAME VARCHAR2(45) PRICE NUMBER(8,2) Evaluate this SQL statement: SELECT * FROM PRODUCTS ORDER BY price, product _ name; What is true about the SQL statement?（）

A、The results are not sorted. B、The results are sorted numerically. C、The results are sorted alphabetically. D、The results are sorted numerically and then alphabetically.

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第6题

[单选题] The PRODUCTS table has these columns: PRODUCT_ID NUMBER(4) PRODUCT_NAME VARCHAR2(45) PRICE NUMBER(8,2) Evaluate this SQL statement: SELECT * FROM PRODUCTS ORDER BY price, product _ name; What is true about the SQL statement? （）

A、The results are not sorted. B、The results are sorted numerically. C、The results are sorted alphabetically. D、The results are sorted numerically and then alphabetically.

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第7题

[] On the pole side of the high pressure belt in each hemisphere，the pressure diminishes. The winds along these gradients are diverted by the Earth’s rotation toward the east and are known as the（）.

A、A.geostrophic winds B、B.doldrums C、C.horse latitudes D、D.prevailing westerlies

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第8题

[单选题] As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.

A、advance B、cavitation C、edging D、slip

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第9题

[单选题] Owing to the greater girth of a ship amidships than at the ends，certain strakes are dropped as they approach the bow and stern to reduce the amount of plating at the ends. These strakes are called（）.

A、drop strakes B、stealers C、throughs D、voids

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These are the principles, however formulated,（）all good men and women throughout the world are standing.

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