[单选]
A non-root user can run rsh commands from serverA to serverB, but attempts to run rsh commands by the root user return with apermission error message.
What action will resolve the problem?（）

A . Add root user to the /etc/hosts.equiv on serverB
B . Create $HOME/.rhosts file for the root user on serverB
C . Restart the rshd daemon with root enabled option on serverB
D . Add entry to allow root user from serverA to the /etc/hosts.allow on serverB

关于电流.电压及电功率描述中，错误的是（）。一个用电器功率的大小数值上等于它在1分钟内所消耗的电能。每个用电器都有一个正常工作的电压值，该电压称为额定电压。电功率的计算公式为：P=U×I。导体中的自由电子在电场力的作用下做无规则的定向运动就形成了电流。电压是物理学中的七个基本量纲之一。保险营销中，应在（）基础上来选择目标市场。保险公司目标分析。市场细分。市场预测。产品生命周期。 The rmss command provides the facility to run an application over a range of memory sizes and display the performance statistics. How is the simulated memory reset to the real memory of the machine？（） rmss -c。 rmss -p。 rmss -r。 rmss -。应用发色底物法测定α2与纤溶酶抑制物不需加（）纤溶酶。 PNA。纤维蛋白原。受检血浆。保险产品不同于其它产品在于保险产品的（）。无形性。潜城性。可替代性。长期性。

A non-root user can run rsh commands from serverA to serverB, but attempts to run rsh commands by the root user return with apermission error message.
What action will resolve the problem?（）

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[单选] A non-root user can run rsh commands from serverA to serverB, but attempts to run rsh commands by the root user return with apermission error message. What action will resolve the problem?（）

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[单选]
A non-root user can run rsh commands from serverA to serverB, but attempts to run rsh commands by the root user return with apermission error message.
What action will resolve the problem?（）