A.標(biāo)準(zhǔn)實(shí)戰(zhàn)姿勢 B.低位實(shí)戰(zhàn)姿勢 C.側(cè)向?qū)崙?zhàn)姿勢
A.400-500 B.500-600 C.300-400
A.1 B.2 C.3