患儿,女,4岁。高热不退,体温39℃。因发现第一磨牙对面的颊黏膜上出现白斑入院,精神委靡、嗜睡倦怠,或终日烦躁不安,咳嗽加重有痰、唇舌干燥、咽极度充血、眼睑浮肿,分泌物多。颈部淋巴结及肝脾肿大,肺部常闻干、湿啰音。从临床上考虑此患儿发生了哪种疾病()
A. 喉炎
B. 水痘
C. 乙型脑炎
D. 麻疹
E. 流行性腮腺炎
Your test database is configured to run in NOARCHIVELOG mode. One of the data files in the USERS tablespace is lost due to a media failure. You notice that all the online redo logs have been overwritten sincethe last backup. What would you do to recover the data file()
A. Take the USERS tablespace offline and re-create the lost data file.
B. Shut down the instance, restore the data file from the last consistent backup, and restart the databaseinstance.
C. Shut down the instance, restore all the database files from the last consistent backup, and restart thedatabase instance.
D. Take the USERS tablespace offline, restore all the data files of the USERS tablespace from the lastconsistent backup, and make the tablespace online
定金是指根据约定一方向对方给付一定数额的金钱作为债权担保的担保方式。债务人履行债务后,定金应当抵作价款或者回收。给付定金的一方不履行约定的债务的,无权要求返还定金;收受定金的一方不履行约定的债务的,应当双倍返还定金。根据上述定义,下列属于定金的是:
A. 小张订婚时按照双方的商定送给女方5万元的礼金
B. 由于车源紧销,小陈在买车时为了能立即提车而同意向4S店多支付1万元
C. 某公司为了确保员工在下一年继续在该公司上班,扣留部分工资至第二年发放
D. 小李在看中某套二手房后向房东支付了2万元,双方约定,在一周内房东将此房出售给小李