In his phone conversation with Macron, Xi expressed gratitude and --- for France’s suport for China’s fight against the disease.
A. compromise
B. appreciation
查看答案
In the face of COVID-19, China and Africa have enhanced solidarity and strengthened friendship and --- trust.
A. mutual
B. invisible
铆钉、螺栓、键等连接件属于( )。
A. 短粗构件
B. 细长构件
在挤压的实用计算中,假设挤压应力在挤压面上均匀分布。()
A. 对
B. 错