The CDU's firewall strategy, which aims to prevent the far-right AfD party from gaining further ground, is facing challenges. While the CDU has managed to maintain its position as the leading conservative party in Germany, the AfD has continued to make gains in regional elections. This suggests that the firewall strategy may be weakening, as the AfD's influence is growing. However, it is too early to determine if the firewall has completely collapsed, as the CDU continues to work on strategies to counter the AfD's rise. The upcoming federal election will be a crucial test for the CDU's firewall strategy. **

It is important to carefully consider whether to hold onto an investment based on various factors such as the current market conditions, the performance of the asset, and your own financial goals. If the investment is still aligned with your long-term objectives and the fundamentals of the asset remain strong, it may be wise to hold onto it. However, if there are significant changes in the market or the asset's performance that could impact its future value, it may be prudent to reassess and consider selling. Ultimately, the decision to hold should be based on a thorough evaluation of all relevant factors. **

Infill does hold, but its strength and durability depend on the type of infill material used and how well it is installed. Common infill materials such as sand, rubber, and organic materials provide stability and support for artificial turf, but they may require periodic maintenance to ensure they remain effective. Proper installation and regular maintenance are essential for infill to hold up over time and provide a stable playing surface. **

Yes, solder does hold materials together by creating a strong bond between them. When heated, solder melts and flows into the joint between two materials, creating a solid connection as it cools and hardens. This process allows solder to hold components in place and create electrical connections in electronic devices. However, it is important to use the correct type of solder and apply it properly to ensure a strong and reliable bond. **

It is unclear what "it" refers to in this question. Could you please provide more context or specify what you are referring to so I can give a more accurate answer? **

Microblading is a semi-permanent makeup technique that involves using a small blade to deposit pigment into the skin, creating the appearance of fuller eyebrows. While the results of microblading can last for up to 1-3 years, the pigment may fade over time due to factors such as sun exposure, skin type, and individual lifestyle. Therefore, while microblading does hold for a significant amount of time, it is not permanent and may require touch-ups to maintain the desired look. **

Makeup does hold to a certain extent, but it can wear off throughout the day due to factors such as natural oils on the skin, sweat, and environmental conditions. Using a primer before applying makeup and setting it with a setting spray can help it last longer. Touching up makeup throughout the day can also help maintain its appearance. **

The inequality holds according to the mean value theorem because the theorem states that for a function that is continuous on a closed interval and differentiable on the open interval, there exists at least one point in the open interval where the instantaneous rate of change (the derivative) is equal to the average rate of change of the function over the closed interval. In this case, the inequality represents the difference between the function values at the endpoints of the interval, and the derivative represents the rate of change of the function. Therefore, the inequality holds because the mean value theorem guarantees the existence of a point where the derivative is equal to the average rate of change, and thus the difference between the function values at the endpoints is greater than or equal to the product of the derivative and the length of the interval. **