A c() sentence contains two or more clauses, one of which is incorporated in the other.
单选题You are Master of a towing vessel engaged in towing three barges astern.The middle barge of the tow would be required to sound which of the following during restricted visibility ().A No fog signalB A prolonged blast at intervals never to exceed more than two minutesC A prolonged blast followed by two short blasts at intervals never to exceed more than two minutesD A prolonged blast followed by three short blasts at intervals never to exceed more than one minute
点击查看答案
问答题Directions: In this part of the test, you will write ONE sentence that is based on a picture. With each picture, you will be given TWO words or phrases that you must use in your sentence. You can change the forms of the words and you can use the words in any order. Your sentences will be scored on:•the appropriate use of grammar and•the relevance of the sentence to the pictureYou will have 8 minutes to complete this part of the test.Practice 1Directions: Write ONE sentence based on the picture, using the TWO words or phrases beneath it. You may change the forms of the words and you may use them, in any order.
多选题class One { void foo() {} } class Two extends One { //insert method here } Which three methods, inserted individually at line 14, will correctly complete class Two?()Aint foo() { /* more code here */ }Bvoid foo() { /* more code here */ }Cpublic void foo() { /* more code here */ }Dprivate void foo() { /* more code here */ }Eprotected void foo() { /* more code here */ }
单选题What does it mean if a backup is expired?()AThe backup set has exceeded the retention criteria set in RMAN and is eligible for removal. BThe backup set has one or more invalid blocks in it and is not usable for recovery.CThe backup set contains one or more tablespaces no longer in the database.DThe backup set contains one or more missing backup set pieces.EThe backup set is from a previous version of RMAN and was not upgraded.
单选题In which of the following situations should correlation names be used?()A A table referenced in the FROM clause has no indexed column.B The table referenced in the FROM clause has more than 200 columns.C Two or more tables in the FROM clause have identical column names.D The FROM clause contains two or more tables in the SELECT statement.
多选题Which three statements are true regarding single-row functions?()AThey can accept only one argument.BThey can be nested up to only two levels.CThey can return multiple values of more than one data type.DThey can be used in SELECT, WHERE, and ORDER BY clauses.EThey can modify the data type of the argument that is referenced.FThey can accept a column name, expression, variable name, or a user-supplied constant as arguments.
问答题The following sentences test your ability to recognize and usage errors. Each sentence contains either a single error or no error at all. No sentence contains more than one error. The error, if there is one, is underlined and lettered. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence is correct, select choice E. In choosing answers, follow the requirements of standard written English. During the excavation of Pompeii, many people worried that artifacts are being destroyed by care-less techniques, A Bbut the dig continued in spite of their concerns. No error C D E