应收及预付款项都是企业的短期债权，应收账款收取的对象是货款，预付账款的收取对象是货币

力最小的牙是（）

A.下颌中切牙

B.下颌侧切牙

C.上颌侧切牙

D.上颌中切牙

E.下颌第一前磨牙

用一根细线，沿水平方向把电灯拉至图1-68中实线位置A，此时CA线所受拉力T1，OA线所受拉力T2．如把电灯拉至图中虚线位置A′，则两线所受拉力T1、T2的大小变化情况是（    ）

A．T1、T2都增大

B．T1增大，T2不变

C．T1、T2都减小

D．T1减小，T2不变

If people cannot afford to buy their own house, they can rent property from a private landlord, as 10% of the population does, or from their local council.

A. as do 10% of the population

B. just as 10% of the population will do
C. the same as 10% of the people do
D. as will do 10% of the population

志贺菌引起典型黏液脓血便的主要致病物质是

A．侵袭力

B．内毒素

C．外毒素

D．杀自细胞素

E．血浆凝固酶