下列键连接，画法正确的是（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/bac8a523591a4796a479aa59a4cb67ed.png

下列螺栓连接画法正确的是（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/a2a72beead024105b50a0d0e7b917bda.png

根据立体图，画法正确的三视图是（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/285dfe434ee2438596d8790400d06723.png

下列哪味中药为桂枝 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/1ecec46f5cb24d1fba6eda07816fff21.JPG"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/6630610aa0cf4408832ccd382a3263e2.JPG"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/862f3e2a8fb7477cba0e4142b90606da.JPG"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/fb77e5e5386c43739e4ef959765e0dcd.jpg">

下列哪味中药为柴胡 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/52f519e3210144ab87fef57fa951264a.jpg"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/67ed1a0a3783414782a019ae69ea0581.jpg"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/661692aff17840c4a892da13f70a78e8.jpg"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/3f64d19bea8741acb95f5a5b1a9dc3ae.jpg">