在使用超声波时,要注意不能使声头空载,是因为A.超声波的热作用B.空化作用C.声头损

题型:单项选择题

问题:

在使用超声波时,要注意不能使声头空载,是因为

A.超声波的热作用
B.空化作用
C.声头损坏
D.要与皮肤密切接触才有效
E.以上说法都错

考点:康复治疗技术(主管技师)康复技师基础知识康复治疗技术主管技师基础知识
题型:单项选择题

某电源两极接10Ω的电阻时,电路中的电流为0.15A.那么把电阻为0.02Ω,量程为0-3A的电流表直接接在电源两极后,会发生什么现象?

题型:单项选择题

细胞癌基因的产物有

A.生长因子受体

B.转录因子

C.P53蛋白

D.酪氨酸蛋白激酶

题型:单项选择题

我国银行负债主要来源于()。

题型:单项选择题

关于无效合同主体不合法的选项是( )。

A.不具备法人资格的社会团体组织,以法人名义签订合同的

B.代理人未经授权、超越代理权限或者代理权消灭后签订合同,未经被代理人追认的

C.未经核准登记以及未领取营业执照,以个体工商户名义签订合同的

D.国家法律限制行为能力人签订合同的

题型:单项选择题

When Dave was eighteen, he bought a secondhand car for 200 so that he could travel to and from work more (1) than by bus. It worked quite well for a few years, but then it got so old, and it was costing him (2) much in repairs that he decided that he had better (3) it.

He asked among his friends to see if anyone was particularly (4) to buy a cheap car, but they all knew that it was falling to pieces, so (5) of them had any desire to buy it. Dave’s friend Sam saw that he was (6) when they met one evening, and said, "What’s (7) , Dave"

Dave told him, and Sam answered, "Well, what about advertising it in the paper You may (8) more for it that way than the cost of the advertisement!" Thinking that Sam’s (9) was sensible, he put an advertisement in an evening paper, which read "For sale: small car, (10) very little petrol, only two owners. Bargain at 50. " For two days after the advertisement first appeared, there was no (11) . But then on Saturday evening he had an enquiry. A man rang up and said he would like to (12) him about the car. "All right, " Dave said, feeling happy. He asked the man whether ten o’clock the next morning would be (13) or not. "Fine, " the man said, "and I’ll (14) my wife. We intend to go for a ride in it to (15) it. "

The next morning, at a quarter to ten, Dave parked the car in the square outside his front door, (16) to wait there for the people who had (17) his advertisement. Even Dave had to (18) that the car really looked like a wreck. Then, soon after he had got the car as clean (19) it could be, a police car stopped just behind him and a policeman got out. He looked at Dave’s car and then said, "Have you reported this (20) to us yet, sir\

12()

A.tell 

B.see 

C.agree 

D.call

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