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【单选题】
生态系统的多样性主要是指什么?A.
气候和水文
B.
气候和结构
C.
生境和生物群落
D.
地貌和组成
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皮皮学刷刷变学霸
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【简答题】计算机信息安全的基本要求有哪些? 人员管理的一般措施有哪些? 分析技术、管理与法律在保障电子商务安全运作中的作用。
【单选题】The signs and cues of social intercourse _____ .
A.
are important to our social life
B.
vary with people
C.
can afford us peace of mind
D.
are never known to us
【判断题】买卖双方磋商如下: 1、卖方3月10日发盘“此发盘在3月20日复到有效”, 2、买方在3月14日还盘“你方价格太高,歉难接受。” 3、3月18日,买方又再次去电“你方3月10日发盘我方接受,信用证稍后寄出。” 至此,合同已经成立。
A.
正确
B.
错误
【单选题】某技术方案的设计年产量为8万件,单位产品销售价格为100元/件,单位产品可变成本为20元/件,单位产品营业税金及附加为5元/件,按设计生产能力生产时,年利润为200万元,则该技术方案的盈亏平衡点产销量为( )万件。
A.
5.33
B.
5
C.
4.21
D.
4
【单选题】Affluenza For many people, economic growth and an increase in possessions are signs of progress, but for anti-consumer groups overconsumption and materialism are sicknesses. A recent Public Broadcasti...
A.
combines two words together
B.
is often made by putting words or parts of words together
C.
is made in the way coins are produced
D.
gives an old world a new meaning
【单选题】We think the best procedure will be to ________ by an expert, and we are arranging for this to be done.
A.
examine the goods
B.
have the goods examined
C.
be examining the goods
D.
be examined
【判断题】Many social signs show us the value of the work and the salary are the key of being happy.
A.
正确
B.
错误
【简答题】阅读理解。 Do you see many signs around you? Do you know the signs are an important part of our daily life? They can be in pictures or in words to give people information. What do people think are good sig...
【简答题】Many social consequences brought forth by electronic proximity include ______.
【简答题】(如果你设法与Smith先生取得联系)___the problem will be solved easily because he is an expert in this field.
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