题目内容
（请给出正确答案）
[主观题]
It is the ______ time for the woman to go to Washington D.C..[A] second [B] first [C] thir
It is the ______ time for the woman to go to Washington D.C..
[A] second
[B] first
[C] third
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下面哪种支架不是液压支架按其对顶板的支护方式和和结构特点分类的基本架型()
A.支撑式支架
B.掩护式支架
C.支撑掩护式支架
D.特种支架
