Good pronunciation means that you have to speak like native speakers.
A、正确
B、错误

单项选择题三相全控桥式整流电路带大电感负载时，控制角α的有效移相范围是多少度。 （ ） A、0°-90° B、30°-120° C、60°-150° D、90°-150°

单项选择题We would therefore suggest ____ your own interest that you cable your acceptance as soon as possible.（ ）A.forB.toC.inD.at