男性，70岁，进行性吞咽困难半年，现只能进半流质。
为确诊，最有效的检查方法是（）| Increasingly, over the past ten years,
people—especially young people—have become aware of the need to change their
eating habit, because much of the food they eat, particularly processed foods,
is not good for health. Consequently, there has been a growing interest in
natural foods: foods which do not contain chemical additives and which have not
been affected by chemical fertilizers, widely used in farming today. Natural foods, for example, are vegetable, fruit and grain which have been grown in soil and are rich in organic matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount— but not the A. They want to return to nature. B. They want to eat all kinds of foods. C. Natural foods are very delicious. D. They are more health conscious. [单项选择]杆距超过（）属飞线，不需加辅助吊线，电杆为加强电杆。
A. 100米 B. 110米 C. 120米 D. 130米 [单项选择]以下药物中哪一个临床应用其右旋体
A. 布洛芬 B. 贝诺酯 C. 萘丁美酮 D. 萘普生 E. 安乃近 [多选题]下列属于无挠性牵引件输送设备的是（ ）。
A.板式输送机 B.螺旋输送机 C.提升机 D.滚柱输送机 E.气力输送机 [多项选择]为了评价整个汽车的经济性，应同时考虑（）
A. 有效燃料消耗率 B. 公里燃油消耗量 C. 发动机的燃料经济性 D. 汽车燃料经济性 [判断题]更换砼枕地段钢轨使用材料主要有接头螺栓及其配件.弹条.扣板.垫圈.轨距调整块.油 料等。
A.正确 B.错误 [单选题]客运：旅客安全：管理缺陷：食物中毒：站车有不法小商贩兜售餐饮食品或其它物品；供旅客饮用水大水壶（热水器）不加锁给予责任人（ ）考核
A.严重A B.A C.B D.离岗一个月 [单选题]下列关于血氧的描述，错误的是：
A.氧解离曲线呈S型 B.通常情况下血浆中溶解的O2较多 C.1分子的血红蛋白（Hb）可结合4分子的O2 D.血红蛋白（Hb）与O2的结合反应快，可逆 [简答题]简述RAM和ROM的区别。
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