试对马歇尔一勒纳条件、哈伯格条件和总弹性条件这三种本币贬值能够改善国际贸易收支的基本

简述制丝风力输送设备堵料的原因.

—How are you getting along with your English?        

—_____, I'm not good at English. But I will work harder on it.           [ ]

A. To start with              

B. To be sure          

C. To my surprise            

D. To be honest

Some people disagree with the idea _____ digital textbook will improve education quality while the traditional textbook is out of date.

A．because

B．which

C．that

D．as

“茶事双绝”是指（）。

A.虎丘泉

B.虎跑水

C.龙井茶

D.碧螺春

对电压互感器的准确度，（）级一般用于电能表计量电能。

A、0.1

B、0.2

C、0.3

D、0.4