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【单选题】
若直线 与 的交点在第一象限，则直线 的倾斜角的取值范围是（ ）A.
B.
C.
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B.
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C.
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【单选题】为了声明一个初值为2的int变量,可以写___。
A.
int number = 2L;
B.
int number = 2l;
C.
int number = 2;
D.
int number = 2.0;
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