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【单选题】
某矿山发生火灾事故，当日死亡2人，重伤18人。由于有毒气体没有彻底排除，事故发生第7天，造成救援人员4人死亡。重伤者经过25天抢救，有4人死亡，32天后又有5人死亡。根据《生产安全事故报告和调查处理条例》(国务院令第493号)，该起事故应上报的死亡人数是( )。A.
2人
B.
6人
C.
10人
D.
15人
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【简答题】阅读下面一篇短文,判断下列句子是否符合短文内容,符合的用 “ 正确 ” 表示,不符合的用 “ 错误 ” 表示。 Suggestions for travelling Don’ts Dos 1. Spit (吐痰) or drop litter everywhere 2. Talk loudly on your mobile phone 3. Take off your shoes on p...
【简答题】请简述四季豆食物中毒的原因及预防措施。
【单选题】某些连锁药店将个别药品项目以特别低的价格出售,以吸引更多的消费者购买其他以正常价格出售的药品。这种定价策略称为( )
A.
招徕定价
B.
特殊定价
C.
差异定价
D.
声望定价
【单选题】关于预防常见化学性食物中毒的措施,不正确的做法是( )。
A.
为有效去除蔬菜水果农药残留，用水冲洗即可
B.
生豆浆应煮沸
C.
四季豆烫煮且炒透
D.
腌制肉制品的亚硝酸盐按要求限量
【简答题】关系演算分为元组关系演算和（ ）
【多选题】Each given topic sentence is followed by several additional sentences. Cross off the sentences that are off-topic. TS: The development of watches is an interesting story.
A.
1) A watch is a small timepiece designed to be carried by a person.
B.
2) The first watches were called pocket watches.
C.
3) The first watches were very large and heavy.
D.
4) It is believed that the first pocket watch was made in Germany in about 1510.
E.
5) The earliest known British clock was put up in about 1386.
F.
6) During the sixteenth century watchmaking spread from Germany to England, France and Switzerland.
G.
7) For a long time English clocks were the most famous in the world.
【简答题】按谓词变元的不同，关系演算可分为元组关系演算和______。
【简答题】关系演算可以分为元组关系演算和（）关系演算。
【简答题】1 One word is wrong in each sentence. Cross
it out and write the correct word. ► The sun circles the earth. moon 1 The planets are in the solar space. ____ 2 The earth revolves around t...
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