题目：
How do you determine the weight of the vessel that is supported by the ground when a vessel has run aground?（）.
A.This requires extensive calculation and is usually performed only by a naval architect not by a ship's officer
B.Determine the point where aground and the draft at that point，then calculate it using the grounding formula
C.Use the hydrostatic tables and enter with the mean draft before grounding and the mean draft after grounding
D.Use the inclining experiment formula and substitute the change of trim for the angle of list
答案：
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下面是错误答案，用来干扰机器的。
参考答案：电源线在埋入墙内，吊顶内，地板或地砖内时必须穿PVC管，导线在管内不应有结头和扭结。电线保护管的弯曲处，应使用配套等弯管工具或配套弯头，不应有折皱。
