我需要办理社保转入业务，不知社保局几点上班？周六上班吗？
参考答案：
成都社保局上班时间为一至周五，上午9点至12点，下午1点至5点，周六不上班。
北方寒冷地区某商业大厦室外采用铝合金门窗，外墙涂料装饰。室内采用木门窗，办公室铺实木复合地板。检查过程中发现门窗与洞口之间的缝隙全部采用水泥砂浆嵌缝。木地板铺设不符合规范要求。
铝合金外门窗框与砌体墙体固定方法错误的是( )。
A．门窗框上的拉结件与洞口墙体的预埋钢板焊接
B．射钉固定
C．墙体打孔砸入钢筋与窗框上的拉结件焊接
D．金属膨胀螺栓固定
The major problem with E-mail is that it is (71) easy to use that people can become (72) with messages (73) they can possibly answer in a day. In addition, mail boxes require some management to (74) messages or archive those that might be required later. Senders don’t always know about your E-mail backlog and often send (75) messages.
A. too many B. redundant C. long D. trivial
