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问题 单项选择题

下列关于液化天然气储罐发生低低液位联锁的因果关系，说法正确的是（）

A.储罐进料阀关闭

B.再冷凝器返回储罐阀门关闭

C.低压泵去高压泵阀门关闭

D.罐内低压泵跳车

答案

参考答案：D

单项选择题

Which of the following practices should be included in a firm’s code of ethics（）

A. Providing the board with relevant corporate information in a timely manner and allowing board members or other insiders to purchase stock before shareholders can make purchases.

B. Neither providing the board with relevant corporate information in a timely manner or prohibiting board members or other insiders from purchasing stock before shareholders can make purchases.

C. Providing the board with relevant corporate information in a timely manner and prohibiting board members or other insiders from purchasing stock before shareholders can make purchases.
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单项选择题

0.38kV与0．38kV线路同杆架设时，转角杆横担间的垂直距离不应小于（）mm。

A.200

B.300

C.400

D.600
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