具有辛味中药的主要作用是（）
A.收敛
B.燥湿
C.滋补
D.泄下
E.发散
参考答案：E
Neither side was willing to give in at all. As a result, no agreement __________.[ ]
A. was reached
B. has reached
C. had reached
D. had been reached
平面平行力系只有（）个独立的平衡方程。
A.1
B.2
C.3
D.4
