架空线路例行试验项目有()。
A.杆塔、拉线检查
B.导线接续管、导线并沟线夹等红外测温
C.接地装置试验及检查
D.导线检查
参考答案:A, C, D
应当在海上打桩活动开始之日的()天前向所涉及海区的主管机关递交发布海上航行警告、航行通告的书面申请。
A.3
B.7
C.15
D.30
He got the first place in the Oral English Contest, ____ was beyond his expectation.
A.that
B.it
C.what
D.which