题目内容

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

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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

挤压面上的挤压力是内力。()

A. 对
B. 错

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

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