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【判断题】
笛卡尔曾失约于巴斯卡的第二次见面。
A.
正确
B.
错误
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举报参考答案：
举一反三
【单选题】第二篇 Sleep We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ walness and that, broadly speaking, the sleep n...
A.
people hate the inconvenience of working on night shifts.
B.
your life is disturbed by changing from day to night routines and back.
C.
not all industries work at the same hours.
D.
it is difficult to find a corps of good night workers.
【单选题】第二篇 A Fire near Waco Six years later, in an about-face, the Federal Bureau of Investigation(FBI) admits that federal agents fired tear gas canisters capable of causing a fire at the Bran...
A.
neutral
B.
bitter
C.
excited
D.
expectant
【单选题】有关系R(A, B, C,D）和关系S(A, B, C, D, E, F)，关系T是及与S的笛卡尔积，即： T=R×S。则关系T的属性个数是______。
A.
4
B.
6
C.
10
D.
24
【单选题】第二心音是( )
A.
标志心室收缩期的开始
B.
标志心室舒张期的开始
C.
以心尖部最强且清晰
D.
是心室壁、房室壁、腱索和乳头肌振动而产生
E.
是左右房室瓣骤然关闭的振动所致
相关题目：
【单选题】第二篇 Sleep We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ walness and that, broadly speaking, the sleep n...
A.
people hate the inconvenience of working on night shifts.
B.
your life is disturbed by changing from day to night routines and back.
C.
not all industries work at the same hours.
D.
it is difficult to find a corps of good night workers.
【单选题】第二篇 A Fire near Waco Six years later, in an about-face, the Federal Bureau of Investigation(FBI) admits that federal agents fired tear gas canisters capable of causing a fire at the Bran...
A.
neutral
B.
bitter
C.
excited
D.
expectant
【单选题】有关系R(A, B, C,D）和关系S(A, B, C, D, E, F)，关系T是及与S的笛卡尔积，即： T=R×S。则关系T的属性个数是______。
A.
4
B.
6
C.
10
D.
24
【单选题】第二心音是( )
A.
标志心室收缩期的开始
B.
标志心室舒张期的开始
C.
以心尖部最强且清晰
D.
是心室壁、房室壁、腱索和乳头肌振动而产生
E.
是左右房室瓣骤然关闭的振动所致
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