99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

Fracture damage to the end links of the anchor cable,or to the jews’ harp may be eliminated by().

A.using a small diameter connecting shackle
B.ensuring the swivel is well lubricated and free to turn
C.installing the connecting shackle with the bow towards the anchor
D.securing a piece of wood to the jews' harp

微信掃碼免費(fèi)搜題