【单选题】【消耗次数：1】
某经纬仪，竖盘为顺时针方向注记，现用盘右测得读数为290°35′24″，则此角值为()。
①
20°35′24″
②
－69°24′36″
③
－20°35′24″
④
69°24′36″
参考答案：
复制
纠错
相关题目
【单选题】
经纬仪的竖盘按顺时针方向注记，当视线水平时，盘左竖盘读数为90°用该仪器观测一高处目标，盘左读数为75°10′24″，则此目标的竖角为（）
①
57o10′24″
②
-14o49′36″
③
14o49′36″
④
-57o10′24″
【单选题】
已知经纬仪竖盘的刻划注记形式为顺时针，盘左望远镜水平时竖盘读数为90°。经盘左、盘右测得某目标的竖盘读数分别为：L=76°34′00″，R=283°24′00″，则一测回竖直角为（ ）。
①
13°26′00″
②
－13°26′00″
③
13°25′00″
④
－13°25′00″
【单选题】
当经纬仪瞄准一点时，盘左竖盘读数为L=80040’12”，盘右读数为R=279019’36”，此时竖盘指标差为（）
①
.-6”
②
.+6”
③
-12”
④
+12”
【多选题】
某经纬仪盘右视线水平时读数为270°，将望远镜物镜抬高后知竖盘读数R在增大，则此经纬仪盘右竖直角计算公式为（ ）。
①
270°-R
②
R- 270°
③
R- 270°
④
–R
【单选题】
将经纬仪安置在O点，盘左照准左测目标A点，水平盘读数为0°01′30″，顺时针方向瞄准B点，水平盘读数为68°07′12″，则水平夹角为（ ）。
①
58°05′32″
②
68°05′42″
③
78°15′42″
④
28°07′12″
随机题目
【单选题】
Notuntilherclassmatecriticizedher______ toadmithermistake.
①
does she begin
②
did she begin
③
began she
④
had she begun
【单选题】
Were it not for the rainny weather, they______ all right.
①
would be
②
may be
③
would have been
④
were
【单选题】
Keeping eye contact ______ respect for the interviewer and your confidence.
①
says
②
pays
③
throws
④
shows
【单选题】
Seeing the enemy, the hero was behaving as though nothing______.
①
was happening
②
would happen
③
had happened
④
happened
【单选题】
__Why didn’t John call me ?
__Oh, his cell-phone ran out of power, otherwise he______ you.
①
had called
②
would have called
③
called
④
would call
【单选题】
I enjoyed the movie very much. I wish I______ the book from which it was made.
①
have read
②
had read
③
should have read
④
are reading
【单选题】
Silveristhebestconductorofelectricity,copper_______itclosely.
①
followed
②
following
③
to follow
④
being followed
【单选题】
But for the party, the old man______of hunger fifteen years ago.
①
must die
②
must have died
③
would die
④
would have died
【单选题】
_____withthesizeofthewholeearth,thehighestmountaindoesnotseemhighatall.
①
When compared
②
Compare
③
While comparing
④
Comparing