Click the Exhibit button. Given this code from Class B： 25.A a1 = new A（）； 26.A a2 = new A（）； 27.A a3 = new A（）； 28.System.out.println（A.getInstanceCount（））； What is the result？（） ["Compilation of class A fails.","Line 28 prints the value 3 to System.out.","Line 28 prints the value 1 to System.out.","A runtime error occurs when line 25 executes.","Compilation fails because of an error on line 28."]
胆碱酯酶抑制药不用于下述哪种情况（） ["青光眼","房室传导阻滞","重症肌无力","小儿麻痹后遗症","手术后腹气胀和尿潴留"]
电子显微分析技术
关于苯二氮卓类的药理作用，正确的是（） ["抗焦虑作用","作用于大脑5-羟色胺受体","镇静催眠作用","抗惊厥作用","骨骼肌松弛作用"]
焊接、切割时产生的热传导（）引起火灾。 ["会","不会","导热","导电"]
简述在进行站点地图规划时，应注意哪些方面的问题？
