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【单选题】
丙酮的同分异构体是A.
丙醇
B.
甲乙醚
C.
丙酸
D.
丙烷
E.
丙醛
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举一反三
【单选题】According to the article, doctors have observed that a typical patient feels depressed, impatient and angry.
A.
Y
B.
N
C.
NG
【单选题】断面与剖视的区别:
A.
剖视是仅画出机件被断开后的断面形状，而断面还要画出剖切平面后的机件结构形状的投影 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
断面是仅画出机件被断开后的断面形状，而剖视还要画出剖切平面后的机件结构形状的投影 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
断面和剖视都是画出机件被断开后的断面形状，他们之间没有区别
D.
断面和剖视都是既要画出机件被断开后的断面形状，还要画出剖切平面后的机件结构形状的投影，他们之间没有区别
【简答题】预先危险性分析法的步骤有哪些?
【单选题】对于下列Tom类,哪个叙述是正确的? public class Test{ public static void main(String args[]){ Tom cat = new Tom(); } } class Tom{ void Tom(){ System.out.println("ok"); } Tom(){ System.out.println("你好"); }
A.
程序运行时输出：ok
B.
有两个构造方法
C.
有编译错误
D.
程序运行时输出：你好
【单选题】Jack is afraid of flying . He feels ________ before he gets on a plane.
A.
surprised
B.
excited
C.
patient
D.
nervous
【单选题】When a diabetic patient feels uncomfortable while exercising,______.
A.
he needs to hold on and continue exercising
B.
he may probably get a low blood sugar level
C.
it is because he's done the wrong exercise
D.
he should still refrain from sweet food
【判断题】It is important to spend time with a patient when they first arrive in hospital so that the patient feels less anxious.
A.
正确
B.
错误
【单选题】The patient feels _________ better _________ today.
A.
much; than
B.
much; /
C.
very; /
D.
very; than
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