Modified leadbismuthmolybdate catalysts containing vanadium, copper, or gold have been prepared, and are selective to the corresponding furan compound from the gas phase oxidation of an unsaturated acyclic hydrocarbon such as butadiene. The inductor closest to the source has the largest inductance and the inductance closest to the load has the smallest inductance. A substance configured to inhibit discharging of the liquid medicine is stored in a space in the cylindrical body that is on an inner side of the second sealing portion and that is separate from the liquid medicine. A launching lever is pivotally mounted in the cavity, toward the front of the barrel, the lever having a forward lug member, a rearward catch member, and a firecracker receiving slot.