国家重点工程、国家科研项目使用的暂准进出境货物，在18个月延长期届满后仍需要延期的，由主管地直属海关审批。
参考答案：错
The local government has again ______ its words not to swallow the arable land for town building and the farmers can do nothing but swallow it. Which of the following is NOT OK? [ ]
A. swallowed
B. eaten
C. broken
D. let down
无淤积的灌溉涵孔径不应小于（），长度不宜超过15m。
