First, 30 mA seconds

50 milliamperes

c、20mA

D, 15mA sec

72. Within (c) working days before the temporary suspension of the safety production license of the construction enterprise expires, it is necessary to submit an application to the issuing authority and return the safety production license.

a、 10

b、 12

c、 14

d、6

73, the construction unit must participate in industrial injury insurance in accordance with the law, pay the insurance premium for (D).

First, migrant workers

B, regular workers

C, contract workers

D, the above are included.

74, according to the "construction enterprise safety production management standard", before waiting for a job, transfer, change, re-mount guard, must receive a safety training of not less than (a) hours.

20 class hours

30 class hours

C, 40 hours

D, 50 class hours

75, the construction unit should establish and improve the accident hidden danger investigation and management and filing monitoring system, step by step to establish and implement from (b) to each employee's hidden danger investigation and management and monitoring responsibility.

I. Project leader

B, the principal responsible person of the enterprise

C, safety management personnel

D, supervision unit

76. Which of the following is not the material (D) required for applying for work-related injury identification?

I. Application Form for Work-related Injury Identification

B, proof of labor relations with the employer.

Medical diagnosis certificate or occupational disease diagnosis certificate

D, employee's household registration certificate

77. The Law of People's Republic of China (PRC) on Work Safety stipulates that the state implements the system of investigating the responsibility for production safety accidents, and investigates the legal responsibility for production safety accidents in accordance with this Law and relevant laws and regulations (B).

I. Relevant personnel

B, responsible person

C, main person in charge

D, technical management personnel

78, groove, pit, ditch pile soil height shall not exceed (b).

One or two million

b、 1.5m

c、 1.0m

0.5 meters in diameter

79. The Regulations on the Reporting, Investigation and Handling of Production Safety Accidents stipulates that after the accident, the relevant personnel at the scene of the accident shall immediately report to the person in charge of the unit, and the person in charge of the unit shall report to the safety production supervision and management department of the people's government at or above the county level and the relevant departments responsible for safety production supervision and management within (a) h. ..

a、 1

b、2

c、 12

Day 24

Article 9 of the Regulations on Reporting, Investigation and Handling of Production Safety Accidents stipulates: "After the accident, the relevant personnel at the scene of the accident shall immediately report to the person in charge of the unit; After receiving the report, the person in charge of the unit shall report to the safety production supervision and management department of the people's government at or above the county level and the relevant departments responsible for safety production supervision and management within 1 hour. "

80, safety lighting power supply should adopt (B) type low voltage transformer.

First, ordinary

B, double winding

C, autotransformer

D, single winding

8 1, in violation of the Regulations on the Administration of Work Safety in Construction Projects, if the construction unit fails to set fire exits at the construction site in accordance with relevant state regulations, it shall be ordered to make corrections within a time limit; If a major safety accident is caused, which constitutes a crime, criminal responsibility shall be investigated in accordance with the relevant provisions of the Criminal Law on (d).

A. legal representative

B, project leader

C, technical director

D, directly responsible personnel

82. When starting the lifting operation, the components should be lifted to (B )mm above the ground before stopping the lifting, and the stability of the crane should be checked. After confirmation, the lifting can be continued.

Fifty pounds? 100

200 pounds? 300

c、400？ 500

d、600？ Eight hundred

83. The construction unit shall register with the construction administrative department or other relevant departments within 3 days from the date of acceptance of jack-up installation facilities such as construction hoisting machinery, integral lifting scaffolding and formwork.

a、 10

b、20

c、30

Day 40

According to Article 35 of the Regulations on the Administration of Work Safety in Construction Projects, the construction unit shall, within 30 days from the date of acceptance of jack-up erection facilities such as construction hoisting machinery, integral lifting scaffolding and formwork, file with the construction administrative department or other relevant departments. The registration mark should be placed or attached to the equipment in a prominent position.

84, earthwork machinery before operation, must find out all kinds of pipelines and other facilities laid on the construction site, and should have obvious signs. It is forbidden to carry out large-scale mechanical operations within m distance between underground pipelines and pressure-bearing pipelines.

A: 0.8

b、 1

c、 1.2

d、 1.5

85, near the construction site tunnel hole, pit, ditch, trough, high limb and other dangerous workplaces, should hang safety warning signs, should be set at night (B).

First, warning signs

B, lighting warning

C, warning railings

D. Warning LED light

86. The general contractor shall be responsible for the safety production of subcontracted projects (D).

First, all

mainly

Part c

D. joint and several

87, the following requirements about the safe use of submersible pump, the error is (a).

First, after the submersible pump is put out of the water, it can be charged, but it is forbidden to pull the cable.

B, submersible pump should be installed to protect the zero and leakage protection device.

C, homework, submersible pump around the water within 30m, no one or livestock to enter.

D when the submersible pump is not in use, it should not be submerged in water for a long time, and should be placed in a dry and ventilated room.

When the submersible pump is put into the water or lifted out of the water, the power supply should be cut off first, and it is forbidden to pull the cable or outlet pipe.

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