调凹法是将A．缺隙两端基牙的倒凹平均分配 B．倒凹适当集中于一端基牙 C．模型向倒凹

用画线单词的对应词填空。

1. Please _____ these pants to your brother and bring his sweater to me.

2. Her _____  likes comedies but her mother doesn't like them.

3. They _____  these shoes for twenty dollars and I buy these shoes for twenty dollars.

4. My T-shirt is _____ but his is small.

5.  Mary has two pencils.  One is _____ ,the other is short.

容量瓶上标有：

企业长期成本

中央型肺癌发生部位是（）

A.细支气管开口以上

B.主支气管开口以上

C.段支气管开口以上

D.叶支气管开口以上

E.毛细支气管开口以上

在过载冲击时，电枢反应引起主磁极下面的磁场将发生畸变故障，处理方法是（）。

A.更换换向极

B.移动电刷位置

C.采用补偿绕组

D.选择适当电刷