lesson17Listen and fill in the blanks3) CCA102 _________own navigation, position 40km southwest of VYK
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lesson17Listen and fill in the blanks4) CCA982_______________right for delaying action
lesson17Listen and fill in the blanks5) CSN3118__________own navigation direct Delta _______120 20km.
lesson17Listen and fill in the blanks6)CCA101 _____________ normal
使君子的性状描述错误的是
A. 呈椭圆形或卵圆形
B. 表面棕红色
C. 质坚硬
D. 横切面多呈五角星形
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