下列误差中______为偶然误差。 A.照准误差和估读误差 B.横轴误差和指标差

题型:单项选择题

问题:

下列误差中______为偶然误差。

A.照准误差和估读误差
B.横轴误差和指标差
C.视准轴误差
D.水准管轴误差

考点:自学考试工学自考工程测量自考题
题型:单项选择题

用词的适当形式填空(共10题:每小题1分,满分10分)

小题1:Having finished her project, she was invited by the school            (speak) to the new students.

小题2:Before you quit your job, ______     (consider) how your family would feel about your decision.

小题3:Before driving into the city, you are required to get your car ____     (repair).

小题4:I can't stand __________________________.(laugh at)

小题5:____________(see)from the mountain ,No 3 senior high school of Lingbao is beautiful.

小题6:If you don't like the drink you___________ (order) just leave it and try a different one.

小题7:When        (ask)for his views about his teaching job, Philip said he found it very interesting and rewarding.

小题8:That piece of music sounds quite familiar. Who _________ (play) the piano upstairs?

小题9:I remembered          (lock) the door before I left the office, but forgot to turn off the lights.

小题10:The island,       (join) to the mainland by a bridge, is easy to go to.

题型:单项选择题

二十九岁妇女,结婚5年,有3次晚期流产史。3次妊娠分别均于孕4个半月左右出现胎膜早破,分娩发动而流产。胎儿发育正常,出生时短暂存活。双方的染色体正常,女方月经周期规则,排卵良好,男性精液检查正常。

本患者下一步的辅助检查手段应是()

A.宫颈碘试验及 * * 镜检查

B.腹腔镜检查

C.胎儿镜检查

D.子宫输卵管造影

E.子宫内膜活组织检查

题型:单项选择题

图告诉我们:如果发生触电事故,应立即__________________或____________________。

题型:单项选择题

如图所示,在水平粗糙横杆上,有一质量为m的小圆环A,用一细线悬吊一个质量为m的球B。现用一水平拉力缓慢地拉起球B,使细线与竖直方向成370角,此时环A仍保持静止。

求:(1)此时水平拉力F的大小

(2)环对横杆的压力及环受到的摩擦力

题型:单项选择题

相传,豆腐的发明者是西汉的()

A.刘荣

B.刘彻

C.刘秀

D.刘安

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