结构杆件在规定的荷载作用下，必须保证杆件的工作变形不超过（）
A.实际变形
B.假定变形
C.许用变形
D.未来变形
参考答案：C
客户投诉处理程序为：接诉—判断处理—聆听与记录—回访—总结。
_______ people went to the concert which was held in Gengsu Theatre ________ the night of April 1st.
A．Thousands of; in
B．Thousand of; on
C．Many thousand; in
D．Thousands of; on
