问题
单项选择题
B/L is the abbreviation for ______.
A.letter of credit
B.buying contract
C.commercial invoice
D.bill of lading
答案
参考答案:D
B/L is the abbreviation for ______.
A.letter of credit
B.buying contract
C.commercial invoice
D.bill of lading
参考答案:D
分为四组,任选一组作答。每题的备选项中,只有1个最符合题意。
矿山安全技术 |
对于煤矿井下电缆,高、低压电力电缆敷设在巷道同一侧时,高、低压电缆之间的距离应大于 ( )m。
A.0.1
B.0.2
C.0.3
D.0.4