与渤海、黄海都相邻的省级行政单位是( )
A.河北、山东
B.山东、江苏
C.辽宁、河北
D.辽宁、山东
我国临海的省区有14个,其中辽宁省、山东省既临渤海又临黄海.
故选:D.
"Do you know ________ " "His father is a doctor."
A.what is his father
B.who is his father
C.what his father is
D.who his father is
承受静力荷载的构件,当所有钢材具有良好的塑性时,焊接残余应力并不影响构件的()。
A.静力强度
B.刚度
C.稳定承载力
D.疲劳强度