测量某段距离,往测为217.30m,返测为217.38m,则相对误差为( )。 A.
1/2700 B.
1/2800 C.
0.000368 D.
0.00357

单项选择题教师自评可以促使教师定期或不定期地对自身的教学活动进行自我反省，充分发挥了评价促进教学的有效性的作用。

单项选择题Read the excerpt from The Chaser by John Collier and choose the option that matches the features of it. Alan Austen, as nervous as a kitten, went up certain dark and creaky stairs in the neighborhood of Pell Street, and peered about for a long time on the dim hallway before he found the name he wanted written obscurely on one of the doors. A、Unreliable narrator; Stream of Consciousness B、Third-person point of view; Past tense C、Climax; Non-fictional Narration D、Spatial order; Flashback