Today is the first day of China's college entrance examination. Thousands of students rushed to the examination room. I wonder if they have awakened everyone's youthful memories. Today, we also come to experience China's college entrance examination. There are a total of ten multiple-choice questions, each with 10 points. Leave your score in the comment area to see how much everyone can score!

01

The carbon fibers used for the reinforcement of load-bearing structures should be small tow fibers whose polyacrylonitrile base is not greater than _______.

A 12k

B 15k

C 16K

D 13K

02

For important components, the design value of tensile strength of high-strength grade 1 carbon fiber composite material should be designed according to _______.

A. 2300MPa

B. 1600MPa

C. 2000MPa

D. 1400MPa

03

When the reinforced concrete structure is reinforced by the bonding steel plate reinforcement method, the increase of the flexural bearing capacity of the normal section should not exceed _______.

A. 30%

B. 50%

C. 40%

D. 60%

04

When using the prestressed carbon fiber composite panel reinforcement method, the concrete strength grade of the reinforced member shall not be lower than _______.

A. C30

B. C20

C. C25

D. C15

05

On the day when the curing time of the adhesive for chemical rebars reaches _______, the on-site anchor bearing capacity test shall be carried out.

A. 7 days

B. 3 days

c. 5 days

D. 1 day

06

When the carbon cloth reinforcement project is checked and accepted, the total effective bonding area of the carbon cloth should not be less than _______ of the total bonding area.

A. 85%

B. 95%

C. 90%

D. 99%

07

Structural adhesives with a design service life of 50 years should pass the test of the ability to resist moisture and heat aging and _______.

A. Thermal aging

B. Resistant to medium erosion

C. Long-term stress resistance

D. Anti-fatigue

08

Regarding the reinforcement construction of the externally bonded steel plate, the sag of the glue should not be greater than _______ when it is attached upside down.

A. 1mm

B. 3mm

C. 2mm

D. 4mm

09

The lack of weft and weft of carbon fiber fabric shall not exceed _______ per 100m in length.

A. 0

B. 2 places

C. 1 place

D. 3 places

010

In a rebar project, the rebar diameter is 8mm, the hole diameter is 12mm, and the hole depth is 80mm. It is known that 2000 rebars need to be planted, the specification of anchor glue is 390ml/piece, and the loss is calculated as 15%. Please buy _______ rebar adhesive glue.

A. 25 pieces

B. 36 sticks

C. 250 pieces

D. 360 pieces