In your construction project, the CPI is 1.30 and SPI is 0.85. What could be the potential reason

A) A critical resource went on sick leave for a long period of time, which had not been anticipated earlier.
B) The Cost of raw materials required for construction increased 10%.
C) You had not taken into account inflation rate.
D) There was 4 days waiting time in the curing of cement, and work could not be done during that time.

部分激动剂的特点除外（）

A.内在活性较弱

B.与受体的亲和力较强

C.单独应用时可引起较弱的生理效应

D.单独应用时可引起很强的生理效应

E.与激动剂合用后，可对抗激动剂的部分效应