若ab>0,a+b<0,且|a|=5,|b|=2,则a2+b3的值=______

题型:填空题

问题:

若ab>0,a+b<0,且|a|=5,|b|=2,则a2+b3的值=______.

考点:代数式的求值
题型:填空题

油泵的及油高度一般应限制在()以下,否则易于将油中空气分离出来,引起气蚀。

A、1000mm

B、6000mm

C、500mm

题型:填空题

Judy had very bad luck yesterday. In the morning, she came to school late, because her alarm clock didn’t go off. Usually she goes to school at 7:20 am. But yesterday, it was already 8:00 am when she got up. The teacher was angry(生气的) and asked her to stay in the classroom after school. At 5:00 pm, it was time for students to go home. But Judy couldn’t. She stayed until(直到) 5:30 pm. When she just went out of the classroom, it began to rain. She didn’t have an umbrella. On her way home, she fell off(摔下) her bicycle. When she got home, she was wet all through.

小题1:Judy was a(n)       .

A.teacher

B.student

C.doctor

D.actor小题2:What does the underlined “go off” mean?

A.出故障。

B.爆炸。

C.响。

D.停止。小题3:When did Judy’s classmates go home?

A.At 7:20 am.

B.At 8:30 am.

C.At 5:00 pm.

D.At 5:30 pm.小题4:How did Judy go home?

A.By bus.

B.By car.

C.By bike.

D.By train.小题5:Which is the best title?

A.Judy, a bad girl.

B.What a terrible day!

C.Judy’s school life.

D.A lucky day.

题型:填空题

含双酯基的抗胆碱药是

A.溴新斯的明
B.硝酸毛果芸香碱
C.硫酸阿托品
D.氯化琥珀胆碱
E.丁溴东莨菪碱

题型:填空题

行程开关的组成包括有()。

A、线圈部分

B、保护部分

C、反力系统

题型:填空题

办理个人电话银行密码设置、修改、重置交易成功后,打印()。

A.通用凭证A

B.通用凭证B

C.通用凭证C

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