DTU板是什么?()
A.数字中继板
B.模拟中继板
C.语音导航版
D.主控板
参考答案:A
睑缘之间水平分布的角膜表层混浊最可能是()。
A.浅表性点状角膜炎
B.角膜小血管翳
C.角膜基质病变
D.带状角膜变性
E.蚕蚀性角膜溃疡
NASA is casting a wider net in the space shuttle investigation as to what caused the spacecraft to swing out of control and () moments before it was to land.
A. disassemble
B. disembark
C. disintegrate
D. disinherit