心火之气有余,既可乘袭______,又可反侮______。
参考答案:肺金 肾水
—Shall I inform him of the change of the schedule right now?
—I am afraid you _______, in case he comes late for the meeting.
A.will
B.must
C.may
D.Can
原氯纯度控制指标是多少?