【简答题】若 2 , 6 , x 构成等比数列,则 x = 。
【单选题】According to the opponents, what does free-trade lead to?
B.
Degradation of the environment.
C.
Degradation of labor standards.
【多选题】电动机全压启动电路的保护环节有____ 、____、____。
【简答题】电动机全压启动电路的保护环节有____、____、____。
【单选题】What trade does Franklin eventually embrace?