单项选择题

气升式生物反应器是依靠气流循环来保证反应器内培养液良好的传热、传质的。（） A. 对 B. 错

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单项选择题

GIVE THE EXPLANATION FOR THE FOLLOWING ACCOUNTING PRINCIPLE。
"Measuring Unit Assumption" A.
It requires that all the transaction data of an entity should be measured and entered in terms of money in the accounting records. B.
It requires that all expenses incurred in generating revenues during a period of time be deducted from the revenue earned. C.
It relates to the extent to which information can be omitted, misstated or grouped with other information without misleading the financial information users when they are making their economic decisions.
D.
None of the above.

就一般情况而论，领导者在授权时应保留以下权力：（）。

答案：正确答案：事关区域、部门、单位的重大决策权，监督和协调下属工作的权力，直接下属和关键部门的人事任免权，直接下属的奖惩权