女孩,8岁。读一年级后留级二年,经诊断性的智力测定,该小儿的智商在正常以下。如 发布时间:2017-07-03 13:10 │ 来源:www.tikuol.com 题型:单项选择题 问题: 女孩,8岁。读一年级后留级二年,经诊断性的智力测定,该小儿的智商在正常以下。如果智商30,属于A.轻度智能迟缓B.中度智能迟缓C.中重度智能迟缓D.重度智能迟缓E.极重度智能迟缓
题型:单项选择题 事务T对数据对象A加上某种锁后,其他事务只能在对A加S锁,不能加X锁,直到事务T释放A上的锁,则可以确定为事务T对数据对象A加的锁是______。A.共享锁B.排他锁C.独占锁D.写锁 查看答案
题型:单项选择题 Environmental scientists are concerned that if industrial pollution was to continue without effective measures, the Earth's surface would warm up to a dangerous degree in the next few centuries. 查看答案