目前使用的电缆支架有角钢支架、装配式支架和电缆托(桥)架三种

题型:判断题

问题:

目前使用的电缆支架有角钢支架、装配式支架和电缆托(桥)架三种

考点:火电电力职业技能鉴定考试变电一次安装工(初级)变电一次安装工(初级)题库
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胸部摄影条件选择的叙述,错误的是

A.FFDl80~200cm
B.腹式深吸气后摒气曝光
C.自动曝光控制最短响应时间≤40ms
D.病人辐射体表入射剂量≤1.5mGy
E.高千伏摄影,滤线栅栅比选8:1

题型:判断题

地区供电局电力调度通信中心负责组织开展二次设备状态评价与风险评估工作,()二次设备状态评价与风险评估结果,组织提出设备运维检修策略,并将结果报单位生产技术部。

A.软件编制

B.收集、软件编制

C.汇总、审查

D.软件编制、发布

题型:判断题

N-烷基化剂常用的有以下哪几类()。

A.醇类和醚类

B.卤代烷类和环氧化合物类

C.醛类、酮类和酯类

D.烯烃衍生物类

题型:判断题

ERCP的正确说法是()

A.经皮肝穿胆道造影术

B.逆行性内镜胆胰管造影

C.逆行肾盂造影

D.静脉法胆道造影

E.口服法胆囊造影

题型:判断题

I got a job teaching special education at a school in Coachella, California, a desert town about 170 miles from home. It was no (1) job. Street gangs (2) around the school after dark."Be careful," Dad warned me during one of my frequent weekend (3) home. He was concerned about my living (4) , but I needed to be on my own.One evening, I stayed after school to rearrange my classroom. (5) , I turned out the light and closed the door. Then I (6) toward the gate. It was (7) ! I looked around. Everyone had gone home.After (8) all the exits, I found just enough (9) to squeeze under a gate in the back of the school. Then I walked toward my car, parked in a field behind the building.Suddenly I heard voices. I (10) around and saw at least eight boys following me. (11) my pace, I reached into my shoulder bag to get my key. I (12) all over the inside of my handbag. But the key wasn’t (13) ! Dear Lord, please help me, I prayed (14) . Suddenly, my fingers touched a loose key in my purse. I didn’t even know if it was for my car, but I took it out and (15) it. It worked!I opened the door, slid in and locked it—just (16) the teenagers surrounded the car. Trembling , I started the engine and (17) away. When I returned to my apartment, the phone was ringing. It was my Dad. I didn’t tell him about my experience; I didn’t want to (18) him. "Oh, I forgot to tell you!" He said, "I had a(n) (19) car key made and slipped it into your purse—just (20) you ever need it.

第(7)空应选择()

A.closed

B.locked

C.stuck

D.opened

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