埋設雙向應變計時,除相互垂直外,還要相距8~10cm。
正確
暫無解析
Duetothebadweathertheplanewas____fortwohours.
Itisimperativethatstudents_____theirtermpapersontime.
Wecanhear()fromthebackoftheroom.
Weareconvinced____therighteousnessofourcause.
一女性患者,50歲.有風濕性關節炎史,現心悸不安,胸悶不舒,心痛時作,舌質紫暗,脈澀,其治療應選用