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搜题
【单选题】
下列关于菌肠毒素叙述哪正确的?( )A.
菌感染机体后产生
B.
只有一个血清型
C.
是一种可溶性蛋白质
D.
不耐热、60℃30分钟即被破坏
E.
只能引起人的急性胃肠炎
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反馈参考答案：
举一反三
【判断题】Japanese negotiators tend to put more emphasis on the literal meanings of words used in negotiation and less emphasis on the relationships established before negotiating begins.
A.
正确
B.
错误
【判断题】The Japanese tend to be very humble and modest because their communication style belongs to the self-enhancement type.
A.
正确
B.
错误
【判断题】If Japan loses competitiveness in computers, Japanese computer workers lose jobs to foreign computer workers and the wages of Japanese computer workers tend to fall relative to the wages of foreign co...
A.
正确
B.
错误
【判断题】Japanese negotiators tend to put less emphasis on the literal meanings of words used in negotiation and less emphasis on the relationships establish ed before negotiating begins.
A.
正确
B.
错误
【判断题】The Japanese tend to focus on business relations, and short-term, gradual growth.
A.
正确
B.
错误
【简答题】将习题1.2的线性规划模型写入excel电子表格
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