有一伸臂梁受力及支承如图,则固端A的弯矩为()kN·m。
A.2
B.3
C.6
D.9
参考答案:C
For breakfast he only drinks juice from fresh fruit ___ on his own farm.
A.grown
B.being grown
C.to be grown
D.to grow
病毒性脑膜脑炎血清特异性抗体滴度,恢复期高于急性期的倍数是()。
A.1倍
B.1.5倍
C.2.5倍
D.4倍
E.5倍