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问题 多项选择题

电缆桥架根据制造材料可分为（）。

A.钢制电缆桥架

B.铝合金电缆桥架

C.玻璃钢电缆桥架

D.防火电缆桥架

E.梯架

答案

参考答案：A, B, C, D

填空题

Questions 14-18


·Using the information in the text, complete each sentence 14-18, with a word or phrase from the list below.
·For each sentence (14-18), mark one letter (A-G) on the Answer Sheet. Do not mark any letter twice.
  • A. professional and managerial employees
  • B. work staff
  • C. human-resource management
  • D. work force skills
  • E. important post
  • F. the improvement of worker’s basic skills
  • G. more money should be invested

American firms don’t attach much importance to ______.
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单项选择题

斜跳板的滚装客船当跳板收至与垂直面成30度时，主板和付板有一个（）过程。

A、伸展

B、折叠

C、收缩
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