sterilized preparation 

Strict aseptic conditions are needed for cell culture, and the culture medium is usually sterilized by autoclave disinfection.

【多选题】以下哪些表达方式正确? A. Each student and all of the professors were invited. B. Each student and all of the professors was invited. C. Each flask and each holder were sterilized before use. D. Each flask and each holder was sterilized before use.

Strict aseptic conditions are needed for cell culture, and the culture medium is usually sterilized by autoclave disinfection. A: 正确 B: 错误

Central Bank sometimes carry out equal foreign and domestic asset transactions in opposite directions to nullify the impact of their foreign exchange operations on the domestic money supply. This policy is called sterilized foreign exchange intervention.

Consider that Britain is trying to maintain a fixed exchange rate with respect to the U.S. dollar. However, the present situation in the foreign exchange market is conducive for the British pound to depreciate with respect to the U.S. dollar. If the British government uses sterilized intervention in the foreign exchange market, then:

When<br/>the central bank allows the purchase or sale of domestic currency to<br/>have an effect on the monetary base, it is called A: an<br/>unsterilized foreign exchange intervention. B: a<br/>sterilized foreign exchange intervention. C: an<br/>exchange rate feedback rule. D: a<br/>money neutral foreign exchange intervention

Following an expansion of the money supply, a government committed to<br/>maintaining a fixed exchange rate must ____. A: accept a surplus in its current account. B: not use sterilized intervention. C: increase its level of government expenditure and autonomous<br/>investments. D: intervene in the foreign exchange market to sell foreign currency and<br/>buy domestic currency.

Which of the following statements is NOT accurate? ____. A: A fundamental disequilibrium can result in a one-way speculative<br/>gamble. B: An ongoing disequilibrium in the foreign exchange market can be<br/>sterilized by keeping official reserve holdings steady. C: Fundamental disequilibrium calls for a persistent series of official<br/>interventions. D: The value of the foreign currency declines if a country revalues its<br/>own currency.