图示结构(不计轴向变形)AB杆轴力为(EI=常数):()
A.A
B.B
C.C
D.D
参考答案:B
The number of the people in the world ______ growing faster and faster.
A. is b. are C. have D. were
急性肾功能衰竭血液净化技术的应用指标是()
A.血肌酐超过440μmol/L,血钾超过6.0mmol/L
B.血肌酐超过440μmol/L,血钾超过6.5mmol/L
C.血肌酐超过442μmol/L,血钾超过6.0mmol/L
D.血肌酐超过442μmol/L,血钾超过6.5mmol/L
E.血肌酐超过445μmol/L,血钾超过6.5mmol/L