题目内容

能够满足食用菌生长、和完成各种生理活动所需的物质称。

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适宜的、、、、和等环境条件是食用菌旺盛生长的保证。

双孢菇菌丝体在一般散射光的条件下还是可以生长的，但不能强光照射。

A. 对
B. 错

Generally, Latin America and South Africa have attained rapid growth in consumer demand as a result of a more even distribution of wealth created by their:

A. natural resources.
B. low labor costs.
C. technological expertise.
D. production efficiencies.

Many new growth markets have sought to enhance their attractiveness and/or economic power by creating:

A. trade blocs.
B. import quotas.
C. labor unions.
D. trade unions.