肺的下界于肩胛线处平第8肋，胸膜的下界在腋中线上也平第8肋。（）
参考答案：错
Mum, I was wondering if you could lend me a few dollars until I ______ on Friday.
A．get paid
B．got paid
C．have paid
D．had been paid
若将空气阻尼式时间继电器由通电延时型改为断电延时型需要将（）。
A、延时触头反转180°
B、电磁系统反转180°
C、电磁线圈两端反接
D、活塞反转180°
