植物叶片中合成的有机物是以什么形式和通过什么途径运输到根部？如何用实验证明植物体内有机运输的形式和途径？
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定期在井下某些巷道中撒播惰性岩粉，增加沉积煤尘的灰分，可以抑制煤尘爆炸的传播，撒播岩粉的巷道长度要不小于（）m。
A. 100
B. 200
C. 300
You need to design an access control strategy for resources that are located in the extranet for partners and for internal users. Your solution must meet business and security requirements. What should you do？（）
A. Create a new child domain named extranet.corp.woodgrovebank.com in the existing forest. Create user accounts for users from partner companies in the new child domain. Create shortcut trusts in which the child domain trusts every domain in the forest
B. Create a new forest and domain named extranet.woodgrovebank.com. Create user accounts for users from partner companies in the new domain. Create a one-way forest trust relationship in which the extranet forest trusts the company forest
Create a new forest and domain named extranet.woodgrovebank.com. Create user accounts for users from partner companies in the new domain. Create an external trust relationship in which the extranet domain trusts the den.corp.woodgrovebank.com domain
D. Create a child domain of the den.corp.woodgrovebank.com domain for the extranet. Create user accounts for users from partner companies in the new child domain. Create an external trust relationship in which the forest root domain trusts the extranet domai
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