The reference must exist in the test and precede the conditional block.
这个引用必须存在于测试中并且在条件块前。
Finally, the code block between do and end includes the code for the test case.
最后，do和end之间的代码块包含测试用例的代码。
Inspection air pressure test(with water head) for No1. water ballast tank(No15 block).
No1压载水舱（No.15分段）气压试验（压头试验）检查。
Inspection air pressure test(with water head) for No1. water ballast tank(No15 block).
No1压载水舱（No.15分段）气压试验（压头试验）检查。
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