题目内容
（请给出正确答案）
[主观题]
Living in the northern part of the country has its problems,__________obtaining fresh wate
r is not the least.
A. with which
B. for which
C. of which
D. which
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A．装备的储存.交接、使用
B．装备的维护保养.维修、登（统）计、教育培训.
C．装备的安全管理.退役、报废
D．装备的检查评比等工作
