在压力容器的工作特性中,当壳壁或元件金属的温度低于-20℃时,按( )确定设计温度。
A.平均温度
B.最低温度
C.最高温度
D.介质温度
参考答案:B
(大连市高三双基测试卷)Could you tell us ______ happens when one student in class expresses a personal opinion _______ maybe offends other students?
A.that; that
B.what; where
C.that; where
D.what; that
脑干中哪些核团的纤维加入到面神经内()
A.疑核
B.孤束核
C.面神经核
D.三叉神经脊束核
E.上涎核