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【简答题】
设函数 f(x)= 2 3 x-1，x≥0 1 x ，x＜0. 若f(a)＞a ，则实数a的取值范围是______．
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反馈参考答案：
举一反三
【单选题】Suppose that a product benefits from a successful advertising campaign. The result is that:
A.
the demand for the product increases.
B.
the demand for the product decreases.
C.
the supply of the product increases.
D.
the supply of the product decreases.
【单选题】Suppose that all 6 genes are transferred from a donorbacterium to a recipient bacterium. Under this condi-tion, which student(s) would argue that Gene A couldbe the last gene transferred?
A.
Student 2 only
B.
Student 4 only
C.
Students 2 and 4 only
D.
Students 3 and 4 only
【单选题】下列化学式与其名称的对应关系正确的是
A.
软脂酸 C 17 H 33 COOH
B.
纯碱 Na 2 CO 3 ·10H 2 O
C.
纤维素[C 6 H 7 O 2 (OH) 3 ] n
D.
丙氨酸 CH 2 (NH 2 )CH 2 COOH
【单选题】Suppose that from a new checkable deposit, First National Bank holds two million dollars in vault cash, eight million dollars on deposit with the Federal Reserve, and one million dollars in required r...
A.
three
B.
nine
C.
ten
D.
eleven
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