恰好有6只狗——P、Q、R、S、T、I卜一参加耍狗表演。该演出的裁判给在演出中获得第

某独立基础底面尺寸为2.0m×4.0m，埋深2.0m，相应荷载效应标准组合时，基础底面处平均压力P_k=150kPa；软土地基承载力特征值f_ak=70kPa，天然重度γ=18.0kN/m³，地下水位埋深1.0m；采用水泥土搅拌桩处理，桩径500mm，桩长10.0m；桩间土承载力折减系数β=0.5；经试桩，单桩承载力特征值R_a=110kN。则基础下布桩数量为多少根

A．6
B．8
C．10
D．12

watch    learn     be    have      Chinese    

Dick and Ellen come from America. Now they 81_____________ in Tianjin. Every morning they get up very early. Then they go to work by car. They start their work at 8:30. They are very busy. They 82_____________ lunch at 12:30. After lunch they work again. They finish their work at 5:30 p.m. In the evening Dick takes Chinese lessons because he wants 83______________ Chinese. Ellen stays at home and 84____________ TV. They like to talk with Chinese people. They often say "Chinese people are very friendly". They like to stay in 85______________ and they like to work with Chinese people.

患者出现尿频、尿急、尿痛、尿赤，临床称为（）

A.淋证

B.癃

C.闭

D.遗尿

E.尿失禁

使用中的消毒液需达到卫生标准为

A．不得检出致病菌
B．HBs阴性，不得检出致病菌
C．细菌总数＜100个/ml，大肠杆菌＜3个/1000ml
D．细菌菌落总数≤100cfu/ml，不得检出致病微生物
E．细菌菌落总数≤5cfu/cm²，HBs阴性，未检出大肠杆菌及其他致病菌

简述皮亚杰认知阶段说的特点。