近平在中国人民解放军建军90周年大会上提出，（）是保持人民军队本质和宗旨的根本保障，这是我们党在血与火的斗争中得出的颠扑不破的真理。 ["党指挥枪","政治建军","思想强军","改革强军"]
为什么不能用压风处理残爆？
A(n)（）indicates that is serious and inmmediate danger for vessel, crew and passengers. ["distress alert","urgency message","safety message","routine message"]
直率热情、精力旺盛、易于冲动、脾气暴躁的是（）。 ["多血质","黏液质","胆汁质","抑郁质"]
Cirrocumulus belongs to（）. ["low clouds","High clouds","Special clouds","medium cloud"]
瘦西湖经历代造园家经营、开发，规模最盛时期是乾隆年间，当时呈现出怎样的盛况？
