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【多选题】
数据模型的三要素包括( )A.
数据结构
B.
数据操作
C.
数据的完整性约束
D.
数据的规范化
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反馈参考答案：
举一反三
【单选题】If a patient has a positive Trousseau's sign and a positive Chvostek's sign, what disorder does the patient most likely have?
A.
Hypophosphatemia
B.
Hypokalemia
C.
Hyponatremia
D.
Hypocalcemia
【单选题】What's the author's point of view on supermarkets?
A.
Supermarkets can live together with independent stores and markets.
B.
All the independent stores should close down in the five years.
C.
People shouldn't turn against the dominance of the supermarket.
【简答题】The automatic doors in supermarkets ________ the entry and exit of customers with shopping carts. A) furnish B) induce C) facilitate D) allocate
【单选题】Taking a test as a battle is a positive attitude towards tests that every student should have.
A.
Y
B.
N
C.
NG
【单选题】When the other person gives you a positive sign, you should give a positive sign, like a smile, in return
A.
R
B.
NR
【单选题】Early supermarkets sold only food and offered ____ services.
A.
a few
B.
few
C.
a little
【单选题】What he expressed as a mere supposition was taken by others as a positive statement.
A.
suspect
B.
surmise
C.
suspicion
D.
surrender
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