第25题: [单项选择]The cubic inch(or liter) displacement of a cylinder is determined by the diameter of the piston and the () A. length of the crankshaft B. volume of the clearance space C. weight of piston D. length of the stroke 参考答案:D
第26题: [多项选择]齐鲁缴费通业务开办的业务种类有()。 A. 电费 B. 电信话费 C. 联通话费 D. 行政事业收费 参考答案:A, B, C