喷头检查时，检查喷头的规格、型号和公称动作温度及（）与设置场所是否相适应。
A、色标
B、防护罩
C、喷水量
D、响应时间指数（RTI）
参考答案：D
诊断消化性溃疡病并发幽门梗阻最有价值的临床表现是
A．进餐后上腹部饱胀不适
B．呕吐物量大
C．呕吐物内含大量宿食
D．呕吐物内无胆汁
E．呕吐后症状可暂时缓解
A vessel constrained by her draft shall, when she overtakes a sailing vessel in a fairway,the sailing vessel is（）.
A.priviledged vessel and keep her course and speed
B.burdened vessel and give way to others
C.burdened vessel and keep course nad speed
D.priviledged vessel and give way to others
