无效合同和被撤销的合同，自签订之日起就没有法律约束力。( ) 发布时间：2017-07-14 20:34 │ 来源：www.tikuol.com 题型：判断题 问题： 无效合同和被撤销的合同，自签订之日起就没有法律约束力。( )
题型：判断题 读一读，选出正确答案。Ann: Hello, where are you going?Bob: To the park to fly a kite. Ann: How's the weather today? Bob: Not sunny. But it is windy. Just right for flyinq kites. Would vou like to play with me? Ann: Great! Let's go.l. Where does Bob want to go?[ ]A. Home. B. School. C. Park.2. What does Bob want to do?[ ]A. To buy a kite. B. To fly a kite. C. To see a friend.3. How's the weather?[ ]A. It's rainy. B. It's sunny. C. It's windy. 查看答案
题型：判断题 评价一个计算机系统时，通常主要使用（55）来衡量系统的可靠性，使用（56）来衡量系统的效率。55（）A．平均响应时间B．平均无故障时间（MTBF）C．平均修复时间D．数据处理速率 查看答案