高压试验装置的电源开关可采用空气开关。
参考答案：错
自尊的人能用正确的言行维护自己的尊严和荣誉。（ ）
In the foreign trade business, the trade terms CFR is often used. CFR is the abbreviation for （）.
A. Commercial Invoice
B. Cost, insurance and freight
C. Cost and freight
D. Carriage paid to
