关节的辅助结构不包括( )
A．囊内韧带B．半月板C．关节盘D．关节面E．关节唇
参考答案：D
19．So eager_________a chance to answer questions, little Tommy waved hard and high in class.
A．he was to be given
B．he was to give
C．was he to be given
D．was he to give
如图所示，理想变压器原、副线圈匝数之比n1：n2=4：1．若原线圈接入电压为u=2202sin100πt(V)的变流电源，副线圈接R=27.5Ω的电阻．电路所接电表均为理想电表．求：
（1）副线圈中电压表的读数U2；
（2）原线圈中电流表的读数I1．
