![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
acceleration/ək'sɛlə'reʃən/()
A.温和地,和善地;适度地
B.加速,促进
C.反射,映现;深思
D.使形成;发生;造成;产生(电流)
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、加速,促进
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.温和地,和善地;适度地
B.加速,促进
C.反射,映现;深思
D.使形成;发生;造成;产生(电流)
B、加速,促进
Why do we feel the plane's acceleration?
A.Because our bodies gain speed just as fast as the plane.
B.Because our bodies do not gain speed.
C.Because our bodies gain speed more slowly than the plane.
D.Because our bodies gain speed before the plane.
A.K和R
B.K和T
C.L和R
D.L和T
在图示工字钢梁截面Ⅰ-Ⅰ的底层装置一变形仪,其放大倍数k=1000,标距s=20mm,梁受力后,由变形仪读得Δs=8mm。若l=1.5m,a=1m,求荷载F的值。