简要说明《血字》在塑造形象、运用比喻和联想等方面的特色。
液体动压轴承轴颈与轴承孔的配合应有()(d-轴颈直径)的间隙。
A. (0.1~0.3)d
B. (0.01~0.03)d
C. (0.001~0.003)d
D. (0.0001~0.0003)d
Uncharted lights,fog signals and radar beacon transmissions may be()near the station.
A. encountered
B. met
C. contacted
D. see