The priority of EGC messages is classified by().
A. distress, urgent and safety
B. safety and routine
C. urgent, safety and routine
D. distress, urgent, safety and routine
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镗削大孔、长孔时,当孔壁有缺陷时可采用大孔镗削刀架进行单刀精镗。
A. 正确
B. 错误
在办公室、阅览室等长时连续工作的室内,其墙面的反射比与照度比宜取()。
A. 0.3~8
B. 0.6~0.9
C. 0.1~0.5
D. 0.2~0.6
As agreed.our bank will_______ your 30 d/s drafts ______them _____the amount of your CIf invoice value.
A. pay.For, to
B. accept, on for
C. honor.for, to
D. meet, on for
人、机配合土方作业,必须设专人指挥。机械作业时,配合作业人员在机械作业和走行范围内通过时应小心观察、快速通过。()
A. 正确
B. 错误