某同学在用弹簧秤测一物体的重力时，错将物体挂在了拉环上，当物

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问题选择题

某同学在用弹簧秤测一物体的重力时，错将物体挂在了拉环上，当物体静止时，弹簧秤的读数为10.0牛顿，则物体的重力[ ]

A．一定等于10.0牛顿

B．一定小于10.0牛顿

C．一定大于10.0牛顿

D．以上判断都不正确

答案

答案：B

选择题

— Haven't I told you that the computer needs _____?

— Sorry, I forgot _____ it fixed. I'll send it for repair right away. [ ]

A. to be repaired; having

B. to repair; to have

C. repairing; having

D. repairing; to have

单项选择题

（）接口：承载PCF和PDSN之间的数据传输。

A.A8

B.A9

C.A10

D.Z11