Listen and choose the best answer.
At 6000m or above.
B. At 6000m or below.
C. At 6600m or above.
D. At 7500 or below
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Listen and choose the best answer.
At 52.
B. At 52 or later
C. At 52 or earlier
D. Before 52.
Listen and choose the best answer.
A. TWA
B. PTA
C. BVL
D. WRY
工程中，图纸幅面有几种？
A. 2
B. 3
C. 4
D. 5
工程图中，图样及说明中的汉字，常采用（ ）
A. 宋体
B. 仿宋体
C. 长仿宋体
D. 楷体
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