5-10.As<br/>for the number of invariant points, the system can be divided into<br/>corresponding sub-triangles, that is, the number of sub-triangles is<br/>equal to the number of invariant points. ()

If two countries trade with each other on the condition of increasing costs, their trading triangles would not be equal.

Triangles look more ______ than squares. A: directional B: stable C: vertical D: balanced

One of the triangles in the following figure represents the true shape of the plane.[img=145x189]1803a0cf3b33d38.jpg[/img]

We have many ________ in the following picture.[img=991x733]18035d44eb1382d.png[/img] A: points B: lines C: triangles D: hearts

Furuncle in dangerous triangles is prone to concurrency? () A: Blepharitis B: Stomatitis C: Maxillary sinusitis D: Cavernous sinusitis E: Nasosinusitis

We have many ________ in the following picture.[img=650x488]1802e30c9f275bc.jpg[/img] A: points B: lines C: triangles D: hearts

triangles在maya中是指？（） A: 三角面 B: 四边面 C: N边面 D: 其他

对于络合滴定，下面关于酸效应系数正确的是（）。 A: lgα_Y_（_H_）≤lgK_MY－8 B: lgα_Y_（_H_）≥lgK_MY－8 C: lgα_Y_（_H_）≤lgK′_MY－8 D: lgα_Y_（_H_）≥lgK′_MY－8

下列材料的热导率λ正确的排列为（）。 A: λ_木材＜λ_钢铁＜λ_混凝土＜λ_纯铝 B: λ_木材＜λ_混凝土＜λ_纯铝＜λ_钢铁 C: λ_混凝土＜λ_木材＜λ_钢铁＜λ_纯铝 D: λ_木材＜λ_混凝土＜λ_钢铁＜λ_纯铝