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考生注意:这份试卷共三道大题(28个小题),满分120分,考试时间120分钟。一、选择题:本大题共18小题;每小题3分,共54分。在每小题给出的四个选项中,只有一项是符合题目要求的。把所选项前的字母填在题后括号内。 (1) (log_89)/(log_23)的值是……() (A)2/3;(B)1;(C)3/2;(D)2。 (2) 如果函数y=sin(ωα)cos(ωα)的最小正周期是4π。那么常数ω为……() (A)4;(B)2;(C)1/2;(D)1/4。 (3) 极坐标方程分别是ρ=cosθ和ρ=sinθ的两个圆的圆心距是……() (A)2;(B)2~(1/2);(C)1;(D)2~(1/2)/2。 (4) 方程sin4xcos5x=-cos4xsin5x的一个解是……() (A)10°;(B)20°;(C)50°;(D)70°。 (5) 已知轴截面是正方形的圆柱的高与球
Candidates Note: This paper has a total of three major questions (28 questions), out of 120 points, 120 minutes examination time. First, the multiple-choice questions: The title of a total of 18 small questions; each question 3 points, a total of 54 points. Of the four options given in each question, only one is in line with the requirements of the title. Put the letter before the option in the brackets after the question. (1) The value of (log_89)/(log_23) is ... () (A) 2/3; (B) 1; (C) 3/2; (D) 2. (2) If the minimum positive period of the function y=sin(ωα)cos(ωα) is 4π. Then the constant ω is... () (A)4; (B)2; (C) 1/2; (D) 1/4. (3) The polar coordinates of the two circles with ρ=cosθ and ρ=sinθ are (...)(A)2; (B)2(1/2); (C)1;(D ) 2~(1/2)/2. (4) One solution to the equation sin4xcos5x=-cos4xsin5x is... () (A) 10°; (B) 20°; (C) 50°; (D) 70°. (5) It is known that the shaft section is a square cylinder with the height and the ball