书面委托代理的授权委托书授权不明的，( )。A．被代理人应当向第三人承担民事责任，

五位同学就周末的情况作了记录并拍了照片，请将照片和记录配对。

小题1:I had a great weekend. I went to the beach with my friends and we played volleyball there. It was tiring but fun!

小题2:I went to the beach with my friend John. We lay on the beach. The sun was shining. The sand was comfortable. We came back very late.

小题3:we had a nice time in the mountains. The weather was cool and cloudy. Just great for hiking.

小题4:My weekend wasn’t so good. I went to visit my best friend, but she was not at home. It was raining all day and I was cold and wet.

小题5:I had a great weekend. I visited my aunt. Iplayed with my friends in a swimming pool. It was very hot , but it was relaxing there.

(1)鉴定一只羊是否纯种；(2)在一对相对性状中区分显隐性；(3)不断提高小麦抗病品种的纯合度；(4)检验杂种F₁的基因型。可采用的方法依次是[ ]

A．杂交、自交、测交、测交

B．测交、杂交、自交、测交

C．测交、测交、杂交、自交

D．杂交、杂交、杂交、测交

考察经营者管理绩效的优劣，在动态趋势上，应当以与（）的比较劣势不断缩小为着眼点。

A、企业历史最好水平

B、市场或行业最好水平

C、市场或行业平均水平

D、市场或行业平均先进水平

摩西在法老面前行的神迹，从哪个神迹开始，埃及的术士就行不出来了？（）

A.蛙灾

B.水变血灾

C.虱灾

D.蝇灾

PASSIM7K/8K卷烟机平准器刷丝轮修整下的烟丝，首先导入（）返回料斗。

A.螺旋输送器

B.振动器

C.回流带

D.振槽