Echocardiogram and stress tests are used only to evaluate exertional symptoms ( echo first in this case ) or suspected organic heart disease 心脏超声和运动负荷试验仅用于检查劳力性症状（首选超声）或可疑性器质性心脏病。
But many patients misunderstand the instructions and turn up for stress tests haing had a cup of coffee , he says , which leads to tests being canceled and reenue lost 但很多病人误解了这个指南，于是因喝了一杯咖啡而放弃了负荷试验，从而导致了试验被取消，医院蒙受收入的损失，他说。
In the meantime , although adising all patients to aoid caffeine before a spect , his lab is still allowing people who inadertently hae only one cup of coffee to hae the adenosine stress test , he said 同时，尽管建议所有病人在spect检查前避免咖啡因，他的实验室仍然允许那些无意中饮用了仅仅一杯咖啡的病人进行腺苷负荷试验。
2d - cad , 3d - cad cae , injection molding machines , 3dmeasurement machines , ultrasonic welding machines , high - frequency electromagnetic welders , hot stamping machines , silkscreen printing devices , caulking machines , automatic screw machines , det raw material - exclusive dryers , load testers 2d - cad ， 3d - cad cae ，射出形成机， 3维测量机，超声波焊着机，高频电磁电焊机，热冲压机，丝印刷装置，铆合机，自动打钉机， det原料专用干燥装置，负荷试验机。
This paper also tested each model and system - the second loop of qinshan nuclear power station ( the second term ) ， computed the balance point ， tested the performance of step disturbance and runback loads for system ( no adding adjustment system ) ， analyzing the factors effecting the first tiptop rotate speed of turb and time which the rotate speed reach the tiptop 在仿真模型上，完成了稳态计算、系统阶跃扰动试验、甩负荷试验(未加调节系统)等测试，主要监控和分析了汽轮机动态特性中两个重要参数：汽轮机第一飞升转速、飞升时间。
