KY-310型牙轮钻机调整履带时，合适的下垂量为（）mm。
A.70～80
B.70～90
C.70～100
D.70～110
参考答案：C
A respectable lawyer is admitted to an acute care facility with epigastric pain. Since admission, the client has called the nurse every 15 minutes with one request or another. Which of the following could explain this client’s behavior（）
A. Repression.
B. Somatization.
C. Regression.
D. Conversion.
“您喜欢蓝色的还是绿色的？”这种提问形式属于（）。
A.主导式
B.征询式
C.含蓄式
D.限定式
