在KTC或SQ3X系列切丝机的磨刀装置中，当顺时针旋转金刚石，金刚石缩短，其摆动半径变小，够不到砂轮无法对砂轮进行修整，使得刀门间隙变小。
参考答案：错
阅读短文，从方框中选择适当的词，并用其适当形式填空。有的需要加助动词(do或does)或不定式符号(to)。（每词限用一次）
Helen White is a nice girl. Her 小题1: name is Helen. She likes(小题2: _ tennis, she thinks it's interesting. But she小题3: playing volleyball, because she thinks it's boring. She小题4: two volleyballs, a baseball and some ping-pong balls. She often goes to school with her friends. And after school, they play games together. Helen eats well, she likes小题5: and fruit very much . She doesn't want to be fat.
在某个信息系统项目中，存在新老系统切换问题，在设置项目计划网络图时，新系统上线和老系统下线之间应设置成（）的关系。
A.结束--开始（FS型）
B.结束--结束（FF型）
C.开始--结束（SF型）
D.开始--开始（SS型）
