皮皮学，免费搜题
登录
搜题
【简答题】
4-5 . 求图所示平面力偶系的合成结果,图上的坐标单位为 m 。已知 F 1 =10N, F 2 =20N , F 3 =30N 。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When a bacteriophage is mixed with its host counterpart, a transparent plaque is formed on the medium called
A.
Dry spot
B.
plaque
C.
Disease spot
D.
colony
【单选题】The mother believes that John's stupid, but it's different _____ of Mary; she's just lazy.
A.
in spite
B.
in the case
C.
in the course
D.
in case
【单选题】Peter’s jacket looked just the same as Jack’s,but it cost his.
A.
as much twice as
B.
twice as much as
C.
much as twice as
D.
as twice much as
【简答题】dental plaque biofilm
【简答题】斑块(plaque)
【简答题】Flossing, an essential part of the tooth-cleaning process, removes plaque between teeth and at the gumline, the breeding ground for ______.
【单选题】Could you just give me a hand? Let's ______ the car into motion it got a flameout just now.
A.
shove
B.
nudge
C.
prompt
D.
poke
【简答题】题干 dental plaque biofilm
相关题目：