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【简答题】
The movie Titanic is a great success. It’s about the romantic story between Jack and Rose. Do you know the story of the big ship Titanic? The ship left for the U.S. from Britain on April 14, 1912. It was the largest ship in the world and was considered the safest. There were 16 watertight compartments at the bottom of the ship. People believed that even if 4 compartments were filled with water, the ship would not sink. After midnight of the first day, the Titanic hit an iceberg. The iceberg made a hole in 5 compartments so the ship began to sink. There were 2,224 people on the ship. There were 1,178 life rafts but there was not enough time for everyone to get into them. 1,513 people died that night and the next morning. Only 20 miles away, there was a ship called Californian. When the radio operator of the Titanic sent a message, there was no response because the radio operator of the Californian was asleep. Another ship called the Cunard did hear the message. It arrived 20 minutes after the Titanic sank. The loss of so many people caused the U.S. and Britain to meet at the first International Conference for Safety of Life at Sea. They decided that there should be rules for every ship at sea. 1. There must be space for every person on a lifeboat in case a ship sinks. 2. Lifeboat drills (训练) for safety must be required so passengers will know how to save themselves in emergency. 3. Ships must have more than one radio operator so someone is always awake to receive messages 24 hours a day.
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【简答题】只读存储光盘的制备过程中,携带有调制信息的有凹凸信息结构的盘被称为()。
【单选题】下列属于信息交合法公理的是 ()。
A.
不同信息的交合可以产生新信息;不同联系的交合,可以产生新联系。
B.
不同知识的交合可以产生新知识;不同信息的交合,可以产生新信息。
C.
不同知识的交合可以产生新知识;不同联系的交合,可以产生新联系。
D.
不同信息的交合可以产生新信息;不同知识的交合,可以产生新知识。
【多选题】黄曲霉毒素B对人和动物有剧毒,主要由以下哪些菌种产生
A.
黑曲霉
B.
黄曲霉
C.
赭曲霉
D.
寄生曲霉
【单选题】黄曲霉毒素主要由( )产生。
A.
赭曲霉
B.
黄曲霉
C.
烟曲霉
D.
寄生曲霉
【单选题】( )是期货交易所按成交合约金额的-定比例或按成交合约手数收取的费用。
A.
交割日期
B.
交割等级
C.
最小变动价位
D.
交易手续费
【多选题】网络规划是( )三要素(简称CSC)的整合过程,如何做到这三要素的和谐统一,是网络规划必须面对的问题。
A.
覆盖
B.
容量
C.
服务
D.
成本
【判断题】黄曲霉毒素主要由黄曲霉和寄生曲霉产生。( )
A.
正确
B.
错误
【单选题】黄曲霉毒素是主要由黄曲霉菌产生的可致癌毒素,其生物合成受多个基因控制,也受温度、pH等因素影响。下列选项正确的是
A.
环境因子不影响生物体的表现型
B.
不产生黄曲霉毒素菌株的基因型都相同 C.黄曲霉毒素致癌是表现型 D.黄曲霉菌产生黄曲霉毒素是表现型
【简答题】黄曲霉素是主要由黄曲霉菌产生的可致癌毒素。有人认为黄曲霉毒素致癌与否是表型,有人认为黄曲霉菌产生黄曲霉毒素与否是表型,你怎样认为?
【多选题】黄曲霉毒素是主要由 菌株产生。
A.
黄曲霉
B.
寄生曲霉
C.
赭曲霉
D.
烟曲霉
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