工程地质现场原为测试的主要方法有哪些？
参考答案：
静力荷载试验、触探试验、剪切试验、地基土动力特性试验
(1) is a method of constructing a project schedule network diagram that uses boxes or rectangles, referred to as nodes, to represent activities and connects them with arrows that show the dependencies.This method includes following types of dependencies or precedence relationships: (2) the initiation of the successor activity, depends upon the completion ofthe predecessor activity.(3) the initiation ofthe successor activity, depends upon the initiation ofthe predecessor activity.
空白（3）处填（）
A.F-S
B.F-F
C.S-F
D.S-S
简述车钩的组成及检查项目？
