【判断题】【消耗次数：1】
关系表中的每一行称作一个元组。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
下面哪一行代码正确的声明了一个类方法(静态方法)？（ ）
①
public int method(int i)
②
protected method(int i)
③
public static method(String s)
④
protected static void method(Integer i)
随机题目
【单选题】
You ____ that letter to James. However, you didn’t.
①
ought to write
②
ought to have written
③
should write
④
should be writing
【单选题】
She found herself____ forward more eagerly to the holiday
at home.
①
looking
②
bringing
③
desiring
④
expecting
【单选题】
When Sarah and I ____ on an article for the school newspaper, we found it difficult to work together.
①
compiled
②
gathered
③
collaborated
④
collected
【单选题】
____ for a long time, the fields are all dried up.
①
There has been no rain
②
Having no rain
③
There having been no rain
④
There being no rain
【单选题】
Then Johnny reached quickly ______ the other pot, vigorously boiling on the stove.
①
down
②
out
③
for
④
to
【单选题】
The game was fixed for today but it has been____ for a week.
①
transfered
②
delayed
③
translated
④
postponed
【单选题】
Dr. Park was accused ____ the patient with overdose of sleeping pills so that the patient’s life was terminated before the expected time.
①
of providing
②
with providing
③
to have provided
④
to provide
【单选题】
I’ m going to do all I can to____ the unpleasant impression
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①
move
②
remove
③
shift
④
transform
【单选题】
Jean Wagner’s most enduring contribution to the
study of Afro-American poetry is his insistence that
it ____ in a religious, as well as worldly, frame
of reference.
①
is to be analysed
②
has been analysed
③
be analysed
④
should have been analysed