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【简答题】
在数据库设计时,为什么涉及多种数据模型?
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参考答案:
举一反三
【单选题】How does the driver figure out that the passenger is a first-time visitor to the city?
A.
The passenger catches a taxi for a short one-mile trip.
B.
The passenger does not understand the rules for tipping drivers.
C.
The driver finds the passenger lost on the street before picking him up.
D.
The driver notices the passenger gazing upward at the tall buildings.
【单选题】What does the woman think?
A.
She thinks the Japanese first got to know how to play football.
B.
She doesn't think football came from China.
C.
She thinks the Europeans play football better.
【判断题】《诗经·硕人》讲的是古代一个美丽的女子庄姜出嫁的场景。
A.
正确
B.
错误
【简答题】How much does the shop assistant offer to reduce at first? [A] Fifty dollars. [B] Five dollars. [C] Two hundred dollars. [D] Sy-five dollars.
【判断题】如果固定成本为零,则经营杠杆系数为 1 ,则企业没有经营风险。 ( )
A.
正确
B.
错误
【单选题】How does Alex feel about the first class?
A.
Still a little nervous after hearing what Amina says.
B.
Nervous throughout.
C.
Very nervous and a little embarrassed.
D.
A little nervous at first and relieved after hearing what Amina says.
【单选题】( )是一座风姿绰约的“海上花园”
A.
大连
B.
舟山
C.
青岛
D.
厦门
【单选题】 党政领导干部因工作严重失误、失职造成重大损失或者恶劣影响,或者对重大事故负有重要领导责任,不宜再担任现职,由本人主动提出辞去现任领导职务是 ( )。
A.
因公辞职
B.
自愿辞职
C.
引咎辞职
D.
责令辞职
【单选题】男,65岁,有高血压及糖尿病史十余年,近数月来劳累后发生心前区闷痛,每次持续1-3分钟,含服硝酸甘油可迅速缓解,发作前后心电图有动态改变,对该患者冠心病有确诊意义的检查是( )
A.
运动平板试验
B.
超声心动图
C.
胸片
D.
冠状动脉造影
E.
胸部CT
【单选题】How does the article suggest the matter that makes up the Earth was first spread through the universe?
A.
Through expulsion from black holes.
B.
Through the explosions of stars.
C.
Hydrogen propulsion.
D.
Theoretical balancing.
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