机动车轮胎磨损到什么程度需要更换轮胎?()
A.花纹深度低于1.6毫米
B.花纹深度低于1.4毫米
C.花纹深度低于1.2毫米
D.花纹深度低于1.0毫米
参考答案:A
— How long is it ______ you picked up your badminton training?
— It was not until my finance became better in last December ______ I started the training.
A.before; when
B.until; that
C.that; when
D.since; that
NAS上用快照技术备份数据,实际上是()。
A、复制了数据
B、复制了数据的指针
C、压缩了数据的指针
D、加密了数据的指针