手工核销，对于无法自动核销的业务，可以双击鼠标选中核销业务，显示**表示核销完毕。
参考答案：对
(2013·济南一中模拟)—Where ________ Mary have put the empty bottles?
—She ________ them away. They must be somewhere.
A．can; can't have thrown
B．must; needn't
C．must; must have thrown
D．can; mustn't have thrown
工期索赔
