用秤称物,物重4kg,平衡时OA∶OB=1∶4。设秤杆、秤盘等重量不计,手的拉力

题型:填空题

问题:

用秤称物,物重4kg,平衡时OA∶OB=1∶4。设秤杆、秤盘等重量不计,手的拉力必须是_______________N。

考点:力矩的平衡
题型:填空题

甲与乙签订了一份借款合同,甲为借款人,借款数额为30万元。甲以自有的一部价值10万元的汽车作为抵押担保,甲又请求丙为该借款合同提供保证担保。合同到期后,甲无力偿还。如果两项担保对担保责任约定不明确,下列说法正确的是()

A、因为没有约定,丙不承担保证责任

B、乙应当先要求丙以保证承担保证责任

C、乙即可以先要求甲承担保证责任,也可以先要求丙承担保证责任

D、乙应当先要求甲以抵押承担保证责任

题型:填空题

Behind our house is the start of a fascinating trail (小径). This trail is one of the old roads that wind through untold miles of forest. My (36) , Beans, and I walk the trail frequently. Normally, Beans sniffs alongside the trail to follow the smell of a deer track or explore some cause known only to him.

Beans is a white dog, quite handsome and very smart. He not only understands what we tell him, but also often makes sounds as if he were trying to (37) back.

One morning, we took a different route, which led us to an unfamiliar trail. I was sure this trail would eventually lead us to our familiar (38) . But, no. We seemed to be far off course. After two hours, I suddenly realized that Beans probably (39) the way home. So I urged, "Beans, take me home." He ran down a new trail. But it merely led to an intersection (岔道口) of trails.

Soon it became (40) that we were getting nowhere. I began to picture the rest of the day in the (41) , without food or drink. We had walked about ten miles. But Beans seemed totally (42) The sniffing and exploring was going well for him.

Finally, we (43) a crossroad near a highway. Lady Luck suggested I should turn left. We did and (44) reached a cottage beside a field. I knocked on the door and explained my situation to an old man. He laughed and then drove us home.

Since our adventure, I (45) that Beans probably knew all along how to get home.

He was just having too much fan exploring new trails.

43()

A.left for 

B.went off 

C.came to 

D.drove toward

题型:填空题

法兰垫片只能垫一片垫片。()

题型:填空题

食管鳞癌的发生与下列哪项因素无关()

A.亚硝胺

B.霉菌

C.进食粗、烫食物

D.遗传因素

E.Barrett食管

题型:填空题

单位工程完工后,施工单位应自行组织有关人员进行检查评定,并向()提交验收报告。

A、质量监督站

B、监理单位

C、设计单位

D、建设单位

更多题库