[单选题]A fire in a pile of dunnage would be classified as a _____.
正确答案 :A
class A
[单选题]性能优良的锚应具有( )。Ⅰ.较大的抓力系数;Ⅱ.抛起迅速;Ⅲ,结构坚固;Ⅳ.重量较大。
正确答案 :B
Ⅰ~Ⅲ
[单选题]A manometer is used to measure____.
正确答案 :A
pressure
[单选题]keep the lines tight
正确答案 :A
保持缆绳受力
查看原题 查看所有试题