普通高血压患者应将血压降至140/90mmHg以下;老年人降至150/90mmHg以下;合并糖尿病、高脂血症、慢性肾病、冠心病等高危患者降至130/80mmHg以下。
参考答案:错
Management’s Global Agenda for the 1990s, According to GE’s Jack Welch
Technological innovation and the translation of that innovation into marketplace advantage will be accelerating ever faster. And in the coming decade year, we’re going to see increasing demands
蜗杆传动可以获得很大的传动比。