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【单选题】
根据光电测距仪测定时间方式的不同,光电测距仪可以分为()两种类型。
A.
 微波测距仪和激光测距仪
B.
 脉冲式测距仪和相位式测距仪
C.
 红外测距仪和光电测距仪
D.
D光电测距仪和微波测距仪
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exchange
B.
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【单选题】The two armies ______ outside the town.
A.
crash
B.
crashed
C.
clash
D.
clashed
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【单选题】The two armies ______outside the town.
A.
crashed
B.
clashed
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相关题目：
【简答题】It took three months for the two companies to reach an (agree) _____
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【简答题】The two armies _______ outside the town. (clash, crash)
查看完整题目与答案
【判断题】为防止PCB铜焊盘被氧化,焊盘表面要进行涂保护层处理。( )
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【单选题】The two armies ______outside the town.
A.
crashed
B.
clashed
查看完整题目与答案