发现电力线断落时，严禁靠近。如人体已经进入距离导线的落地点8m以内时，应（）。 A.

施工成本控制方法中的赢得值(挣值)法的评价指标包括( )。

A．费用偏差

B．进度偏差

C．计划工作预算费用

D．进度绩效指数

E．已完工作预算费用

关于任务难度与努力程度的关系，说法正确的是（）。

A.任务越简单，越能激励自己努力

B.任务越难，越能激励自己

C.中等难度的任务比太难或太易的任务更容易激励自己

D.任务难度与努力程度没有关系

设N_A为阿伏伽德罗常数的值，下列说法中正确的是（　　）

A．常温常压下，11.2L的NO₂和CO₂混合气体含有N_A个O原子

B．标准状况下，22.4L的乙烯中含有的共用电子对数为12N_A

C．1L0.1mo1•L^-1的氨水中含有0.1N_A个OH^-

D．以石墨为电极电解氯化铜溶液时，若阳极上失去电子N_A个，则阴极质量增加32g

C

Classified ads

For direct classified service, call 800-0667 10 a.m.-4 p.m., Monday—Friday.

For rent

Excellent room for girls, begins Jan., 2,4,or 8 months lease(租期). Single,$105-125.Double,$140. Call 800-1932.

Family home, 3 bedrooms, large yard.$275. Call 800-4300

**********************************************************************************

For sale

Sheepskin coat, men’s size 42, 1 year old. $85. After 6 p.m.Call 800-5224.

Color TV21,$150；transistor radio, $15；recorder,$25. Call 800-0739.

**********************************************************************************

Help wanted

Babysitter — My home

If you could find a few hours during the day, some evenings and weekends to care for 2 school-age children, please call 800-1111.

**********************************************************************************

Lost

A black bag with a pencil-box and some books left in the reading room. Will the finder please come to Class 3,Grade 1?

**********************************************************************************

Found

A green Jacket was left on the sports ground yesterday afternoon(April 15th).Will the owner please ring 656-6688?

59.“Classified ads”may probably mean____________.

A.ads about everyone’s life

B.ads giving one some necessary information

C.ads divided into different groups according to a certain rule

D.ads for which you needn’t pay any money

60.If you want to place an ad. What number should you call?

A.800-0739.                 B.800-1932.                 C.800-4300.                 D.800-0667.

61.If you want to get a used color TV and a recorder, how much will you have to pay?

A.＄275.                      B. ＄150.                    C. ＄25.                     D.＄175.

62.If you want to find a part-time job,you will look at                .

A.For rent                   B.For sale                     C.Help wanted                     D.Lost

63.If you can’t find your school card,you will put up a notice at_________.

A.Lost                          B.Found                       C.Help wanted                     D.For sale

由于贸易纠纷而导致进口商拒付时,保理商对出口商没有追索权。